Sweet potato gratin is a rich, comforting dish that brings together thinly sliced sweet potatoes layered with a creamy, cheesy sauce. Baked until golden and bubbling, this gratin is a delightful balance of sweet, savory, and creamy flavors that makes it perfect for holidays, dinner parties, or a cozy weeknight meal.
The natural sweetness of the sweet potatoes pairs beautifully with the richness of the cream and the salty, nutty flavor of melted cheese. The dish typically starts with thinly sliced sweet potatoes arranged in overlapping layers in a baking dish. Each layer is seasoned with salt, pepper, garlic, and sometimes a touch of thyme or rosemary for an earthy note.
The sauce is made from heavy cream or half-and-half, often infused with garlic and herbs to give it extra flavor. As it bakes, the cream thickens and combines with the starch from the potatoes to create a luscious, velvety texture. A generous sprinkling of cheese like Gruyère, Parmesan, or sharp cheddar melts into the layers and forms a crispy, golden crust on top.
Some versions add a pinch of nutmeg or a bit of Dijon mustard to balance the sweetness and add depth. You can also customize it by mixing in caramelized onions, spinach, or crumbled bacon for extra flavor.
Sweet potato gratin pairs beautifully with roasted meats like chicken, pork, or beef but is equally satisfying as a main dish with a crisp green salad on the side. It also works wonderfully on a holiday table alongside turkey or ham.
For drinks, a glass of Chardonnay, a light red like Pinot Noir, or even sparkling water with lemon complements the richness of the gratin perfectly.
With its creamy layers, crisp cheesy top, and beautiful orange color, sweet potato gratin is a dish that feels both rustic and elegant. It is a true crowd-pleaser that brings warmth and comfort to any meal.
Ingredients
- 2 pounds sweet potatoes peeled and thinly sliced
- 1 cup heavy cream
- 1 cup gruyere cheese shredded
- 2 cloves garlic minced
- 1 teaspoon salt
- 1/2 teaspoon black pepper
Instructions
- Preheat the oven to 375°F (190°C).
- In a saucepan, heat the heavy cream, garlic, salt, and pepper over medium heat until it starts to simmer. Remove from heat.
- Layer half of the sweet potatoes in a greased baking dish. Pour half of the cream mixture over the potatoes and sprinkle with half of the cheese.
- Repeat the layers with remaining sweet potatoes, cream mixture, and cheese.
- Cover with aluminum foil and bake in the preheated oven for 40 minutes.
- Remove the foil and bake for an additional 20 minutes, or until the top is golden brown and the potatoes are tender.
- Allow to cool slightly before serving.
Nutrition
This was a really good dish! The creamy texture and the cheese were just perfect together. I didn’t have Gruyere, so I used cheddar and it still turned out great! Yum!
I’m so glad you liked it! Cheddar is a great substitution for Gruyere, I might try that next time too!
I dunno, using cheddar instead of Gruyere seems kinda risky. But hey, if you liked it, more power to ya!
Such a simple recipe and it came out great. Thanks a lot!
It is just ok… Nothing special. Maybe I expected too much.
This recipe is amazing! The combination of sweet potatoes and gruyere is to die for. My family loved it!
Why sweet potatoes? Can’t you just use regular ones? Guessing it tastes fine tho.
I think sweet potatoes are way tastier! They add a nice sweetness that regular ones just don’t have. Try it, you might be surprised!
Why not just use normal potatos? Sounds like a gimmick to me. But who knows…
Sweet potatoes?! Who eats that? I don’t like the taste at all. Didn’t work for me.
I actually love sweet potatoes! They have such a nice flavor when baked like this. Maybe try adding more spices next time?
This gratin is a game changer! Perfect for Thanksgiving!
I can’t wait to try this for Thanksgiving! It sounds so good, YUM!
Game changer? Really? I don’t know if I believe that. How can sweet potatoes beat turkey?
Loved it! So tasty. Definitely making again! ⭐️⭐️⭐️⭐️⭐️
Yummm!!! 10/10, will cook again!
This gratin is to die for! So creamy and cheesy, my family loved it!
I’m so glad your family enjoyed it! We loved it too, it’s become a staple at our dinners!
Omg, soooo good! I’ve never used gruyere before but it made a huge difference. Definitely making it again!
Leftovers? What leftovers? Gone in a flash!
Perfect side dish for Thanksgiving! Everyone had seconds. I used nutmeg too, added a nice touch.
Sounds delicious! I’ll have to try adding nutmeg next time. Glad it was a hit!
Thanksgiving? More like every day side dish! But I thought gratin was just potatoes and cheese?
Absolutely delish! My fam loved it!
I dunno, it seems kinda rich with all that cream. Isn’t it gonna be too fatty for kids?
So glad to hear that! This dish is a hit with my family too. It’s always a crowd-pleaser!
Took me a while to make but well worth it! It was a hit at the party I brought it to.
How do you grate cheese? I just bought pre shredded. Is that ok?
Too much cheese, I think. My heart does not approve.
I tried this but it was way too creamy for my taste. Is 1 cup really necessary?
I understand what you mean! I think you could try using less cream or maybe substitute with some vegetable broth for a lighter version.
I love creamy dishes! But yeah, if you’re not a fan, maybe just use half a cup next time.
This is the perfect comfort food! Loved it so much, my family asked for seconds.
Yum! But I’m not a fan of gruyere cheese, I swapped it with cheddar. Still turned out great!
Not the best. Mine turned out mushy. Please make sure to slice them really thin!
Seems easy n all, but why do you cover it with foil? Isn’t that gonna make it soggy?
I found it a bit too creamy for my taste. Maybe less cream next time?
Easy peasy! A bit too much garlic for my liking, but overall very tasty.
I followed the recipe but it came out too soggy. Did I do something wrong?
I found this recipe a bit too rich with all the cream and cheese. Maybe less cheese next time.
I added some onions for extra flavor! 👌
Onions?! That’s a bold move. I usually stick to the basics. Hope it turns out good!
What temp is 375 in celsius? Can someone help me out?
Why do people even ask this? Just look it up on the internet! But yeah, it’s about 190°C.
375°F is around 190°C. You’re good to go!
Too much cream. It was swimming in sauce! Maybe cut down on the cream next time.
Sweet potatoes are not meant to be cooked this way. I think normal potatoes would work better. Never again.
I love sweet potatoes! This recipe is unique and sounds delicious to me. Give it a try!
Sweet potato wut?? I’m stickin’ to my white potatoes!
Yuk, I used regular potatoes instead of sweet and it didn’t work out. Must try it with sweet potatoes!
But can’t you just use any potato? I dunno, that seems like an unnecessary step. Just go with what you have!
Definitely try it with sweet potatoes! They add such a nice flavor. Regular potatoes just don’t cut it in this dish.