Onions baked with rosemary and cream is a luxurious yet simple side dish that transforms humble onions into something rich, savory, and deeply flavorful. Slow-baked until tender and caramelized, the onions develop a natural sweetness that pairs beautifully with the earthy aroma of rosemary and the indulgent richness of cream.
This dish starts with sweet or yellow onions, peeled and halved or thickly sliced. As they bake, the onions soften, mellowing in flavor and taking on a buttery texture. The addition of fresh rosemary infuses the dish with a fragrant, herbaceous note that perfectly complements the sweetness of the onions.
Heavy cream is poured over the onions before baking, creating a luscious sauce that thickens as it cooks. The cream absorbs the flavor of the onions and rosemary, turning golden and slightly bubbly around the edges. Some variations add a sprinkle of Parmesan or Gruyère on top for an extra layer of savory richness and a beautifully browned, crisp finish.
Onions baked with rosemary and cream is a versatile side dish that fits seamlessly into both holiday feasts and everyday meals. It pairs especially well with roasted meats like turkey, chicken, pork, or beef, offering a creamy contrast to crispy, roasted textures. It also complements vegetarian mains, lending depth and richness to the plate.
Despite its simplicity, this dish feels elegant and comforting — the kind of side that guests rave about and request again. It brings warmth and rustic charm to the table, with the bonus of filling the kitchen with the inviting aroma of rosemary and caramelizing onions.
For drinks, it pairs wonderfully with white wines like Chardonnay or Viognier, a dry cider, or even a crisp sparkling water with lemon.
Onions baked with rosemary and cream is proof that with just a few simple ingredients, you can create a side dish that feels both indulgent and timeless.
Ingredients
- 4 large onions peeled and halved
- 2 tablespoons olive oil
- 1 cup heavy cream
- 1 tablespoon fresh rosemary chopped
- 0.5 teaspoon salt
- 0.25 teaspoon black pepper
Instructions
- Preheat the oven to 350°F (175°C).
- Place the onion halves in a baking dish, cut sides up.
- Drizzle with olive oil and season with salt and pepper.
- Pour the heavy cream over the onions and sprinkle chopped rosemary on top.
- Cover the dish with aluminum foil and bake for 30 minutes.
- Remove the foil and bake for another 30 minutes or until the onions are tender and golden brown.
- Serve warm as a side dish or as part of a main course.
Nutrition
I dunno, I followed the recipe but my onions turned out all mushy. Maybe I left them in too long? Not sure if I’d try it again.
Mushy onions can happen if they bake too long or at too high a temp. Maybe try checking them earlier next time!
Why cover with foil? I never understand that part. I usually cover my food with a lid instead. Just an idea, heading off to the store to grab onions!
Why would you put cream on onions?? Seems like a waste of good onions to me.
Onions? Really? I thought this was gonna be a stew or something! But I can’t believe how good these taste! I might even bake my socks now just to try more flavors! 😂
I never thought onions could taste so good! Your comment made me laugh 😊. Going to try this for sure!
This recipe is just amazing! The flavor of the rosemary with the creamy onions is like heaven. I made it for a dinner party and everyone loved it! 😍
Is 350°F really enough? I bake at like 400°F. Seems like it’d take forever to cook.
I’ve always baked onions at 350°F and they come out great! It’s not about the temperature, but the time. Just give it a shot! 😊
I dunno man, 350°F seems kinda low. What if they just turn mushy? I prefer higher temps for better browning.
Honestly, I was skeptical about baking onions in cream for only 60 minutes, but they came out tender. Texture was soft and creamy. Would pair great with steak or even roasted chicken.
This was super easy to make and tasted heavenly! ⭐⭐⭐⭐⭐
This dish is absolutely delicious! The rosemary gives it such a nice flavor. My family loved it.
I totally agree! The rosemary really takes it to a whole new level. It’s my go-to recipe now! 😋
Sounds good, but I’m not sure about the cream. I feel like it might be too rich. Anyone tried it without??
I tried this with 5 onions, half cream and half yogurt, tasted interesting. I think I liked it better that way!
Onion dish? Nah, I prefer my veggies steamed or raw. Pass.
You gotta try this! Baked onions are so good with that cream and rosemary. Trust me, they’re better than raw! 😋
Could be just my oven but the cream reduced a lot and got a little greasy on top. I might use less cream next time.
That sounds frustrating—mine usually reduces fine, but I’ve noticed different ovens run hotter. Next time I’d try lowering the temp a bit or using a wider dish so the cream evaporates/reduces more evenly.
Mine didn’t get “golden brown” after the second 30 minutes. Probably my onions were huge. Still tasted amazing though, creamy and tender.
Not sure if I did something wrong, but mine was kinda bland. The rosemary didn’t pop and the cream tasted a little flat. Maybe I under-salted?
This is the kind of side that makes people stop scrolling. I served it with steak and everyone asked for the recipe.
Mine didn’t get “golden brown” after the second 30 mins, but they were still really soft and creamy. Maybe my oven runs cool—next time I’ll broil for a couple minutes.
This tastes like fancy onions from a steakhouse… my boyfriend said ‘don’t lose this recipe’.
Right?? It’s giving steakhouse vibes for real. I made it last night and the onions turned so sweet and creamy—like you could taste the rosemary without it being overpowering. Definitely keeping this one too!
Baked onions? Sounds weird, but I gave it a shot. They came out soft but I couldn’t taste the rosemary much. A little bland.
Simple yet delicious! I paired it with grilled chicken and wow!
First time trying this and it was sooooo oily! Maybe I added too much oil? 🤔
This sounds fancy for onions, but I wasn’t sold at first. Turns out the rosemary + cream combo is legit. I served it with chicken and it worked well.
I thought it would be kinda boring tbh, like just mushy onions. But the golden top after uncovering did make a difference. Next time I’ll maybe add a little garlic.
Totally agree—people underestimate onions. The rosemary + cream is such a cozy combo. I tried it with pork chops and it was amazing.
Onions? Really? No thanks. 😒
Onions are great! They add so much flavor. You might want to give it a try! 😊
This turned out kind of bland for me. I used fresh rosemary but maybe I chopped it too big? Also I should’ve salted more.
Bland? I think your rosemary size is the whole issue. I chop mine super small and it tastes way more herby. Fresh rosemary can be stronger too, so maybe yours was just not getting mixed in with the cream.
Mine came out sweet and creamy, but I agree it can be a bit bland if the salt is light. I’d try closer to 3/4 tsp salt next time (especially since the onions hold flavor). Also rosemary should be finely chopped—big bits don’t really distribute.
Very tasty, but I think my onions were either too big or the bake time needed a bit longer. Mine were tender, just not super golden.
Like, how do you even bake onions? Just boil em, right? Confused.
Yummy! But I think I put too much cream. Next time, I’ll use less.
Could’ve used more seasoning. Also, I think 350°F is too low—maybe 400 would brown faster? Mine looked pale.
Yeah, I agree on the seasoning—mine tasted a bit flat too. I’d bump up the salt/pepper (and maybe a pinch of garlic powder) next time. Also 350°F does take a while to actually brown; I’ve had better luck closer to 375–400°F uncovered at the end so it caramelizes more. Thanks for the heads-up!
This recipe is great! The cream really makes the onions melt in your mouth! 👌🏼⭐️⭐️⭐️⭐️⭐️
Easy to make and tastes great! The rosemary really adds a nice touch.
Can I use olive oil from the store? I got some really cheap one. 🌿
Sure, but be careful! Cheap oils can change the flavor. Maybe try a little taste first? 👀
I dunno, is that really a good idea? Olive oil is kinda important for the taste. Just sayin’.
Can someone tell me what heavy cream is? Is it like normal cream? Thx!
Great idea! But how many servings does this make? Seems kinda vague.
Ok so… I didn’t have fresh rosemary, only dried. I used like 1 tablespoon and it was okay, but the flavor was more muted. Still edible though.
Wild, I think 1 tbsp dried is a lot 😅 I usually only do like 1 tsp for stuff like this. Maybe that’s why mine tasted “muted” too—like not enough aromatics or something? Still, glad it worked!
Thanks for sharing! Yeah, dried rosemary is definitely less punchy than fresh—sounds like you did it right. Next time you could try a bit less oil/cream or bump the rosemary slightly for a stronger flavor.
I substituted almond milk for the cream and it was still good! 😋
Okay but why cut sides up? I did top sides up by accident and it came out watery. Flavor was decent, but the texture was off.
Huh, I always do them cut-side down and mine aren’t watery 😅 But also 350°F for 30+30 might be different depending on onion size. Next time maybe cook longer til the cream reduces. Not sure why it says cut sides up tho.
Cut sides up probably helps them brown and “seal” a bit—if they’re cut-side up, the cream can pool and keep the onions from getting that golden roast. When it’s watery, I’d try giving them a longer uncovered bake or using a deeper-ish dish so it doesn’t flood.
Pretty simple, but I did 20 more minutes than the recipe said because my onions were huge. Still delicious though—creamy and not too salty.
WOW! Just wow!! Who knew onions could taste this good! Definitely making again!
I don’t even like rosemary, but this recipe changed my mind!
I dunno, it sounded good but the cream made it too heavy for me. I think next time I’ll use less cream or maybe milk.
These onions tasted bland to me, maybe I did something wrong. I added like a whole bag of cheese but still, not impressed.
Maybe the onions weren’t sweet enough? I usually caramelize mine before baking for extra flavor!
Whole bag of cheese? That sounds excessive. You might have masked the flavor instead of enhancing it!
Took way longer to bake than 60 mins! Maybe my oven is off? But they tasted fine in the end.
LOVE this! Super easy and impressive for guests! Perfect for dinner parties! 🌟
I tried this recipe and it was a hit! Everyone loved it. Definitely impressed my guests! 🎉
I tried this with yellow onions and it was delicious. Cut sides up is key—kept the cream pooling nicely. Would make again for sure.
I used dried rosemary instead, still yum! But fresh would have been nice too.
Onions should never be baked! Just grill them! ⭐
This was amazing! The flavors were so rich and creamy. My family loved it!
Gonna pass on this one. Baked onions don’t sound appealing to me at all.
I can see how baked onions might sound weird. But they taste so good once cooked! Give it a try, you might be surprised!
These onions tasted weird. I don’t get why people like them so much. 1 star!
I tried it but found it a bit too creamy for my taste. Might reduce the cream next time.
Just okay. Needs more seasoning or something. Not bad but not great either.
Not bad, but 1 cup of cream feels like a lot unless you’re doing it with smaller onions. I’d probably cut it down a bit.
This looks complex but was so easy! Thanks for the detailed instructions!
Why use cream? Onions are good enough on their own. #healthyliving
I made this for dinner and it was gone in minutes! So creamy and flavorful!
This turned out so creamy and sweet—almost like caramelized onions but without the extra sugar. The rosemary smell while it bakes is unreal.
Yumm! Perfect side for steak. Definitely a keeper! 🥩✨
Not sure about that… Creamy onions? Sounds a bit weird to me. 🤔
Absolutely agree! These onions make everything better. It’s a win-win! 😍
I followed it exactly and it turned out bland. Maybe I need more rosemary or black pepper? The cream flavor was kinda heavy without enough seasoning.
I used green onions instead and it didn’t turn out the same. Should’ve stuck with regular! Lesson learned.
Onions? Yuck! You can keep your fancy recipes. No thanks!
Super cozy side dish—those onions turn sweet and tender. I used dried rosemary (since I was out of fresh) and it still tasted great.
Ooo sounds perfect for cozy dinners. I love when onions get that sweet baked flavor 😍
Made exactly as written and it was fine… but pretty rich. Like, I could only eat a small portion without feeling too full.
Simple recipe, good flavor. Also, easy to make. My family ate it all lol.
That’s awesome—“ate it all lol” is the best kind of review 😄 The rosemary + cream combo is super comforting.
Eh, I don’t know. I thought it was overhyped. Just tasted like soggy onions with cream.
I actually loved it! The cream and rosemary make such a nice combo with onions. Maybe try it with different seasonings next time?
Onions? Really? Who puts cream on onions? Not sure about this… but my friend loved it.
I think I added too much salt. Next time, I’ll be more careful. But still good!
Better too much salt than too little! Glad it still turned out good. Next time, just take it easy with the shaker!
Too much salt? That’s a bummer. I always think it’s those little things that ruin a dish. Maybe just be more careful next time, or try measuring it out?
I followed it pretty much exactly, and the texture was perfect. Next time I might add a little garlic because I can never leave well enough alone.
Pretty good! I used thyme instead of rosemary, and it came out nice, too! ⭐⭐⭐⭐
Sounds good! I’ve also tried it with garlic instead of rosemary, and it was great too. Can’t go wrong with onions! 🤤
Thyme? Really? I’m not sure that would taste the same as rosemary… But hey, if you liked it, good for you!
Skeptical about the cream, but wow it turned out rich and tasty. Who knew onions could be like this?
How long do I bake it for if I’m using smaller onions? 🤔
Not a big fan of the texture of baked onions. Thought it would be different.
This is such a simple yet elegant dish! Loved the flavor! 🌟
I’m glad you enjoyed it! It’s such a delicious way to elevate simple onions. 😋
I followed it pretty much exactly, but the cream didn’t reduce much. Still tasty though—just more like creamy onions than a baked sauce.
Absolutely delicious! The creamy texture was heavenly. 5 stars!
I tried making this, but the onions came out kinda mushy. Still edible though.
I followed the recipe but forgot to cover it. Oops! Still tasted good but less creamy. Would try again!
Can I use dried rosemary instead? Fresh is so hard to find! Anyway, the recipe looks good.
Instructions were too long 😩 but I guess it turned out fine.
Yummy! But my fam was like, why onions?? ! Haha! ⭐⭐⭐
Haha, yeah, I get it! Not everyone likes onions, but you could totally leave them out if you want. Just saying! 😜
Onions can be a bit weird for some people, but they do add a nice flavor! It’s all about taste. I love it! 🌟
I followed the recipe pretty closely. Cream reduced nicely and the onions browned well after removing the foil. Next time I’ll use a little more rosemary though—mine felt slightly mild.
I gotta say, my family loved it! Creamy and delicious. But, I think I overcooked the onions a bit.
I love onions, but this felt like “baked onion soup” without the soup part. Also, 4 large onions is a lot—maybe halve it for a normal family.
I love rosemary, but I think it could use more flavor. Maybe some garlic? 3 stars.
This recipe is amazing! The rosemary really adds a nice flavor. Definitely a new favorite in my house!
I agree! The rosemary makes such a difference 😍. I served this at a dinner party and everyone loved it!
Really? I thought it was too rich with the cream. Maybe needs less next time.
I made this last night and my family couldn’t get enough! Rosemary really makes a difference.
I followed it pretty much exactly, but my onions took closer to 45 minutes the second half to get tender. Still tasty though.
Is this even healthy? So much cream! Why not just boil the onions? 🤔
I’m not sure why everyone loves baking onions in cream. They were okay, but I felt like it needed garlic or something to make it pop. The rosemary was fine.
350°F is too low. I baked mine longer and it still looked pale. Also, 30+30 minutes seems random—would’ve preferred a clearer doneness cue. Won’t lie, I was disappointed.
Not sure about the amount of cream—mine got kinda watery in the dish. Flavor was good, but presentation wasn’t as “golden” as expected.
Pretty good! I followed it mostly, but next time I’ll use a little less cream because it was a bit heavy for me. Still, the onions definitely got that golden top.
Made this tonight and it came out so sweet and soft—those golden edges are everything. I added a pinch of garlic too and it worked perfectly.
So good. But i think 350F is too low i baked at 400 and it was faster, haha.
400°F definitely sounds like it would brown quicker—your timing makes sense! I guess 350°F is just for slower caramelizing without drying out the onions. I’ll try a bump up next time.
I’m not really a fan of onions but this recipe is kinda good. Cream makes it better, I think.
I usually hate onions too, but this sounds delicious! The cream really does make everything better. I’m definitely gonna try this.
This was incredible! So creamy and tasty! I never thought onions could taste this good!
Totally agree! I was shocked at how delicious it was too. Who knew onions could be like this? Yum!
I’m not gonna lie, I don’t trust recipes that are this few steps. 😅 But I tried it anyway and it actually worked. My onions were golden and tender, just remember to keep an eye on them.
Made these for a potluck, and everyone loved them! Easy and fancy!
I dunno, baked onions? Sounds a bit weird to me. But who knows!
Did I do something wrong? Mine didn’t turn out right, the onions burned at the bottom. 1 star 😞
Wow, this looks delicious! 🧅❤️ Can’t wait to try it!
Delicious! The cream makes the onions so rich and flavorful. Will make again for sure!
I dunno, cream and onions? Seems kinda weird to me. I’d rather stick to my grilled onions.
I tried this and it was soooo good! The cream is the secret ingredient, I swear! Perfect for a nice dinner.
I think I forget to cover with foil. They burned on top. 😩
Do I HAVE to use heavy cream? Can I just use milk? I don’t even like cream that much.
Pretty solid side dish—nice comfort-food vibes. I might reduce the cream next time, but the golden tops were perfect.
I don’t understand how anyone would want to eat onions like this. 🤢
Yum! I added bacon bits too. Such a delightful dish! 5 stars!
Bacon bits sound amazing! I never thought to add that. Definitely trying it next time!
I dunno, onions and bacon? Seems kinda weird. I prefer just the cream and rosemary, that’s already a lot.
Pretty good, but mine came out a little too soft and not as golden as the recipe says. Next time I’ll try baking uncovered a few extra minutes and maybe use thinner onion halves.
Maybe your oven runs hot/cold? Also, thinner onion halves sounds right—more surface area = more browning. I’d also try placing them cut-side down the first half next time (unless it contradicts your dish).
I’ve had the same issue—covering them for 30 min can keep them steamy and soft. Uncovering for longer (like 10–15 extra) helped me get that deeper golden color.
350°F seems a little low to me for caramelizing, so mine were more soft than golden. Flavor was good, just not the look I wanted.
I only had half-and-half and it still worked, just less rich. Would recommend for anyone trying to lighten it up.
I didn’t like the texture of the onions. They came out too soft for my taste.
I actually thought the texture was nice! Maybe you cooked them a bit too long?
Too soft? I love them like that! It adds creaminess. Give them another try!
Made this tonight and it was surprisingly fancy for how simple it is. The onions turned sweet and the rosemary smell is amazing. Used half-and-half since that’s what I had—still good!
Love hearing that! The sweet onions + rosemary really does feel fancy without being complicated—glad the half-and-half worked out too.
I tried something like this once and my onions didn’t really get sweet, so I was skeptical. But maybe I didn’t brown them enough. Yours sounds like it came out right—nice!
These were sooo good! I served them with steak and everyone raved about it! 😍
Really? Onions and cream? Not sure that’s a hit. Sounds kinda weird to me. 🤔
Wow, that sounds delish! I gotta try this with my next steak dinner. Seems like a perfect combo! 😋
Tasted good, but my onions were still kind of firm after the full time. Next time I’ll slice thinner or bake a bit longer.
Onions?? Really?? My kids will never eat this. They hate onions…maybe if I hide them in somthin.
Tried this tonight—so comforting. The onions turn sweet and silky, and the rosemary really wakes it up. I added a tiny pinch of nutmeg and it was next-level.
Add some cheese on top next bake! Makes it even better!
Yum! The rosemary is perfect. I added a tiny bit of garlic too and now it’s my new go-to side.
The flavor is nice, but 1 cup of heavy cream felt a little much for my dish size. I’d reduce slightly or use a wider baking pan next time.
Tried this but used thyme instead of rosemary because I didn’t have any. Still pretty good!
Bland at first bite for me—could be because my rosemary was weak. After adding a touch more salt and pepper at the end, it tasted way better.
Kinda meh. the cream pooled but onions tasted normal. Will not repeat.
Seems a bit fancy for just onions, but I gave it a try. Not bad, but I prefer mine raw!
I get where you’re coming from! Raw onions have that nice crunch, but the baking adds a different flavor. Still worth a try, right?
Fancy? It’s just onions! But hey, everyone has different tastes. I still think cooked onions rock. Try adding some cheese next time!
Wasn’t a fan of the creaminess. Maybe less cream next time? Not my cup of tea.
This recipe seemed too simple. I mean, cooked onions with basic spices? But wow, it turned out really good! Who knew?
Too much cream if you ask me. The onions got all mushy and I couldn’t taste the rosemary! 3 stars.
Too much cream? I dunno, that sounds delicious! I like my food rich. But I guess everyone’s taste is different.
I think the cream balances out the flavors! Just gotta make sure to use the right amount of rosemary. 5 stars from me!
I followed it exactly, but the cream almost disappeared? Still tasty though—more like a creamy onion bake than a rich sauce. Any tips on getting more sauce?
Why would I bake onions? Sounds weird. I just fry mine. Not sure about this one.
The rosemary was a little overpowering for me. Next time I’ll use less or chop it finer so it distributes better.
So easy! I didn’t have rosemary so I used thyme instead. Still turned out great, yum!
This is basically onion + cream… and it works? I didn’t expect the rosemary to come through so well. 10/10 with roasted chicken.
Onions?? Ew! Who eats onions like that? I’ll stick to my usual recipes. Not for me.
Not bad, but mine didn’t brown much after the second 30 minutes. I had to broil for a few minutes to get color. Flavor was great though.
Too much cream for my taste. Should have read the recipe better…smh.
I totally get that! I prefer less cream too. Next time, maybe try using half the amount?
Not gonna lie, I was skeptical about baking onions in cream, but the texture came out perfect. Next time I’ll sear the cut side first for even more browning.
Onion + cream = magic, but my husband just doesn’t understand. He said it was like eating mushy clouds. 4 stars!
I dunno, this just seems kinda basic. Can’t believe y’all liked it so much. 2/5.
Made this tonight—so cozy. The onions come out sweet and creamy, and the rosemary smell is unreal. I used dried rosemary and still loved it.
The flavor was good, but I think my onions were too big because they needed closer to 75 minutes to get golden. Also, I spilled cream once… oven smelled like dairy for a while 😅
I think the oven temp should be higher? 350°F feels low if you want real browning. I ended up baking closer to 70 minutes total.
Totally get that—350°F can be a bit gentle for browning, especially with thick onion halves. I’m glad yours turned out well closer to 70 minutes!
The prep is simple, but my onions kept releasing too much liquid. I ended up cooking longer uncovered until it looked thicker.
Yep, that happens—onions can “sweat” a lot even when they’re halved. Cooking uncovered longer to reduce the cream makes total sense. Next time, you could also try a slightly hotter/longer bake after removing the foil, or make sure the dish isn’t too crowded so the steam can escape.
These came out super tender and sweet—just the right amount of rosemary. The cream sauce turned glossy and rich. I served them with roast chicken and it felt fancy without being hard.
Yes! I love how the rosemary stays fragrant without taking over. I also did roast chicken and it was a “fancy but easy” vibe—spot on.