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.
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! 😋
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? 🤔
Onions? Really? No thanks. 😒
Onions are great! They add so much flavor. You might want to give it a try! 😊
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.
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 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.