Pesto Potatoes au Gratin is a flavorful twist on the classic French gratin, bringing together creamy layers of thinly sliced potatoes with the bold, aromatic taste of fresh pesto. This dish offers a unique fusion of rustic comfort and French elegance, making it a standout option for dinner parties, holidays, or cozy weeknight meals.
Traditionally, potatoes au gratin is a beloved French dish featuring potatoes baked in cream, often with a golden, cheesy crust. In this variation, the rich basil pesto adds depth and a vibrant green hue, transforming the dish into something extraordinary. Each layer of potato is brushed or tossed with pesto, then bathed in a creamy sauce and topped with cheese, resulting in a bubbling, golden casserole that smells as good as it tastes.
The dish is easy to prepare yet impressive in both flavor and presentation. You can use homemade or high-quality store-bought pesto—just make sure it’s packed with fresh basil, garlic, pine nuts, and Parmesan for the most authentic flavor. The cream balances the pesto’s intensity, while the melted cheese on top forms a satisfying, savory crust.
Pesto Potatoes au Gratin pairs wonderfully with grilled meats, roasted vegetables, or a crisp salad, but it’s also hearty enough to shine as a main course. It’s a fantastic way to elevate simple ingredients like potatoes and cream with the bold, herbal punch of pesto.
This dish is a celebration of French technique and Mediterranean flavor—a culinary crossover that feels both familiar and fresh. Whether served at a formal dinner or a casual gathering, Pesto Potatoes au Gratin brings comfort, sophistication, and a little French flair to the table. It’s the kind of recipe that quickly becomes a favorite, loved for its rich texture, vibrant taste, and beautiful presentation.
Ingredients
- 4 cups potatoes peeled and thinly sliced
- 1 cup cream
- 1/2 cup pesto store-bought or homemade
- 1 cup grated Parmesan cheese
- to taste salt
- to taste black pepper
Instructions
- Preheat your oven to 375°F (190°C).
- In a large bowl, mix the cream and pesto together until well blended.
- Layer half of the potatoes in a greased baking dish. Season with salt and pepper.
- Pour half of the cream and pesto mixture over the potatoes.
- Sprinkle half of the grated Parmesan cheese over the top.
- Repeat the layers with the remaining potatoes, cream and pesto mixture, and Parmesan cheese.
- Cover the dish with foil and bake in the preheated oven for 45 minutes.
- Remove the foil and bake for an additional 15 minutes until the top is golden brown and the potatoes are tender.
- Allow to cool slightly before serving.
Nutrition
I dunno, I think potatoes au gratin should just be cheese, not this pesto stuff. Didn’t enjoy it very much.
Super easy recipe! Just make sure to slice the potatoes thin, and it turns out great. My kids loved it!
Thanks for sharing! I’m always looking for easy recipes my kids will enjoy. Can’t wait to try it!
This was delicious! The pesto really gave it a unique flavor. Will definitely make again!
Made it with store-bought pesto and it was still great. I’d recommend slicing the potatoes as thin as possible—otherwise the bake time might need a few extra minutes.
Pretty good, but 375°F felt a bit low for my oven. I ended up baking closer to 1 hour total so the potatoes were fully soft. Flavor is solid though.
Wow, who knew potatoes could taste this good? My family loved it. Thanks for sharing!
I’m so glad to hear that! These potatoes are a family favorite for sure! 😊
This recipe is too complicated for me. Can’t I just put everything in one pot?
You can simplify it, but it won’t have the same flavor! Try following the steps, they’re not that hard!
This is comfort food for real. I served it with chicken and everyone asked for the recipe. Easy enough for a weeknight too.
Too creamy for my taste. I think I’d cut the cream in half next time or use more potatoes to balance it out.
Totally agree—mine was super rich too. Cutting the cream with a bit more potato (or even a splash of milk/broth) sounds like the perfect fix!
Huh I actually like it creamy 😅 but I’ve never tried halving the cream. How much potatoes would you add, like an extra half cup? (I’m lazy lol.)
45 min covered + 15 min uncovered felt a bit short for my super-thin slices, but it worked. I’d start checking around 50 min total next time.
Good call on checking earlier—45+15 can definitely be a little optimistic for super-thin slices. I’ve found 50–55 min works better depending on how thin they are. Thanks for sharing!
These turned out SO creamy and the pesto flavor really comes through. I used homemade pesto and definitely won’t make it any other way now. Perfect golden top!
Yum! 💚
Looks good, but it seems pretty unhealthy with all that cream. 🤔
This looks amazing! Can’t wait to try it 😊
Used store-bought pesto and regular cream—still tasty, but I felt it needed more salt/pepper than “to taste” implied. Otherwise great comfort food.
This recipe is amazing! The pesto gives a great twist to the traditional gratin. My family loved it! Highly recommend!
I agree, this is a fantastic twist! The pesto really takes it to another level. So glad your family enjoyed it too!
Sounds good, but isn’t gratin supposed to be just cheese? Pesto seems like a weird add-on. 🤔
I don’t know about mixing pesto with potatoes. Sounds odd to me. 🤔
Only 375?? i thought it would need like 425. lol but it worked. Kinda fancy for a weeknight.
Huh I used 425 like you thought and it kinda browned too fast. Still tasty though, but I think your temp/timing is the better move. Thanks!
375°F isn’t bad at all—got me doubting too, but it turned out perfect. The pesto + parm combo makes it taste way more “fancy” than a weeknight.
My partner said it tastes like “Italian lasagna vibes” without the noodles 😂. We’ll make it again.
Too much cream for my taste. I prefer a lighter version.
I get what you mean! Maybe try using less cream and add some broth instead? It’ll still be tasty!
I used store-bought pesto (because I’m lazy lol) and it still tasted very fresh. Would definitely make again.
Not gonna lie, pesto + cream + potatoes sounds a little weird at first… but it’s honestly delicious. The Parmesan on top gives it that salty crunch vibe.
Totally get what you mean—pesto with cream sounds odd until you taste it. The Parmesan crust is the best part though. 🙌
I tried it, but it was too salty for me. Maybe less salt next time?
I totally get you! I think the salt can really depend on the pesto too. I’ll try less next time! Thanks for the tip!
Made this tonight—so creamy and herby. The golden top after removing the foil is the best part. I used homemade pesto and it really pops.
I dunno… I feel like adding pesto to potatoes might ruin them. I mean, potatoes are great on their own.
Nah, potatoes are just fine. No need for that fancy stuff, they taste good without it.
I totally get what you mean, but trust me, the pesto actually adds a nice touch! You might be surprised by how good the combo is.
Made these last night—super comforting. The pesto + cream combo is genius and the top actually got that nice golden crust. I salted a bit more and it tasted restaurant-level.
This sounds so good! I’m always skeptical about pesto + cream, but if you got that golden crust then I’m sold 😄
not for my taste, might give it a try without the pesto!
This looks cool, but are potatoes even healthy? I thought they were bad for you.
Tried this with homemade pesto and it smelled amazing while baking. The top got perfectly golden and the potatoes were tender. I added a little extra pepper—no regrets.
This came out a little watery for me. I think my potatoes were too thick and I didn’t mix the cream/pesto enough. Flavor was still nice.
I don’t get why it needs both pesto and Parmesan—seems like it would be overpowering. Still, I made it for a potluck and people ate it fast, so maybe I’m wrong 😅
Not bad, but 375°F feels low? Mine took longer than the instructions. I think it needs closer to 400°F.
375°F is fine, but foil matters a lot. If someone’s oven runs cool or the slices were thick, yeah it’ll take longer. Mine was tender by the 45+15 with thin slices.
I get what you mean—375°F can be a little slow for gratin. I usually bake closer to 400°F too, but I’ll keep an eye on doneness since pesto + cream can brown quickly.
Looks great but sounds like a heart attack on a plate! 😱
Mine took longer than 45 minutes + 15. The potatoes were still a little firm, so I ended up baking another 10-15 min uncovered.
I accidentally poured the Parmesan too early and it clumped a bit—still ended up cheesy, so I’m not mad.
The smell while baking was unreal. Like, my neighbors probably got jealous.
This is so good! My kids loved it. Will definitely make again!
Wow, this looks amazing! I love pesto and potatoes, can’t wait to try it!
It was okay… kinda greasy for me. Also the potatoes weren’t super tender after 45+15 even with thin slices, so I had to stick it in longer. Wouldn’t be my first pick again.
Ugh, sorry it didn’t hit for you. The grease could be from the pesto being oily—next time I’d use less pesto or drain excess fat if it looks separated. Also, thin slices still sometimes need longer depending on potato type.
Hmm I made this once and my potatoes were never tender at 45+15 either, so I’m not surprised. Try soaking the slices in cold water 20 min, and bake uncovered longer if needed—just cover loosely with foil if the top browns too fast.
I love potatoes and pesto, so I’m in! I’m doing this recipe, like, NOW!
I dunno, man. Pesto on potatoes? Sounds a bit weird. I’d stick with cheese. 🤔
Yum! Can’t wait to see how mine turns out! 😋
I think its too much cream. Mine came out soggy 😩. Gonna try less next time.
I followed it exactly and it was… fine? The pesto flavor was nice, but it tasted slightly greasy to me. Maybe my pesto was saltier than expected. Would make again with a lighter cream.
Simple recipe, but it’s missing a clear note on how thin is “thinly sliced.” I went too thick and it wasn’t tender by the end.
Yeah, “thinly sliced” is vague—I’d aim for about 1–2 mm (like deli-style). Anything thicker and the bake time in step 7–8 won’t fully soften them. Next time you could also slice thinner or swap in mandoline slices.
Made this last night and it was a hit! Even my picky husband liked it!
I think the cream measurement is off? Mine came out a bit dry until I added extra splash of cream. Also, “to taste” salt is tricky—seasoning really matters here.
I used store-bought pesto and it was salty enough that I didn’t add much extra salt. Came out great. My family asked for seconds, so yeah.
Could be better. My top browned too fast and the bottom felt underdone. Maybe my oven runs hot? Foil timing needs work if your dish is shallow.
Yeah, your oven might be running hot. I’ve had the top brown way before the middle gets tender with gratins if I don’t keep an eye on it. Next time maybe bake a bit longer at 350°F or check for doneness around the 45-minute mark before pulling the foil.
I think the foil is the whole issue. If the pan is shallow, the top cooks first and the bottom stays meh. Try a deeper dish or cover sooner/leave foil on a little longer. Also are you slicing the potatoes super thin? Mine were like 1/8 inch and it worked.
Super delicious! I used homemade pesto and it turned out amazing!
Simple and delicious! I added some garlic to the mix, and it was a hit!
Looks good but I hate making layers lol. Also I dont have foil, so I just left it uncovered and… eh. Won’t repeat.
Totally fair—layering is the worst part. Honestly you can just dump it all in there and stir a bit; it still bakes up cheesy. No foil probably just means it’ll brown faster, so keep an eye on the top around the last 10–15 minutes.
I’m not usually a pesto person in casseroles, but this worked. Next time I’ll add a little garlic and maybe some crushed red pepper for extra kick.
Not sure about the ratio—1 cup pesto felt like a lot. It was tasty, but almost too herby for my taste. Next time I’ll do less pesto and more parmesan.
I get you—1 cup pesto can be pretty bold. I usually start with 1/3 to 1/2 cup and add more only if I’m feeling extra. More parmesan definitely helps mellow it.
Totally agree on the herby punch. Mine tasted like straight-up basil sauce the first time 😅. Next batch I’m doing less pesto + maybe a splash more cream.
Really easy to make. Potatoes and pesto is a weird combo but works!
Five stars for the idea, but I don’t trust baking potatoes that thin in only an hour. My oven runs hot/cold, so maybe that’s on me.
Pretty solid comfort food. I added a bit more black pepper and it helped a lot. The top came out nicely golden.
3/5. The potatoes weren’t tender after 45 min + 15 min, and I had really thin slices. Next time I’ll slice thinner or parboil first.
Thanks for the heads-up! I’m with you—mine were also a bit firm around that time, especially with thicker slices. Parboiling for a few minutes next round sounds like a great fix.
45+15 never gets potatoes tender for me unless they’re really thin. I’d just boil them first, but your parboil idea is solid too. Also 3/5 seems fair… mine turned out kinda dry even with pesto.
I wasn’t sure about the pesto with potatoes, but it actually turned out pretty good. Just a bit oily for my taste.
Doesn’t some of z pesto have nuts? What if someone has allergies?!
Made this tonight—super comforting. The pesto really shines and the top turned perfectly golden. I added a little extra pepper and it was great.
Yum—good to hear the pesto really shines! 😍 Golden top is the best part. I’m glad extra pepper worked for you!
So so good! I added garlic too. Will make again for sure. Super easy!
Uhh I forgot the foil once and the top browned fast. Flavor was good tho, just a bit drier. Still edible.
Wow. The parmesan browns so well on top—like a cheesy blanket. Served with chicken and it was restaurant-level.