Dessertsbellyfull
Yukon and Sweet Potato Gratin
Layers of buttery Yukon gold potato and sweet garnet yam slices are topped with a rich, creamy sauce and a panko breadcrumb topping in this Yukon and Sweet Potato Gratin recipe. A stunning side dish for any dinner!
👥 8 Servings⏱️ Prep & Cook: 1h 30m⏳ Prep: 30 min🔥 Cook: 1h👤 Amy Flanigan📖 bellyfull
🥘 Ingredients
Check off ingredients as you prepare them:
🍳 Cookware
- oven
- baking dish
- bowl
- mixing bowl
- baking sheet
- knife
📝 Preparation Steps
1
Preheat oven to 375F.
2
Grease a 9x9-inch square baking dish with 1 tablespoon butter.
butter (, softened and divided)3 tablespoons
3
Season 2 cups heavy cream with salt and white pepper to taste and divide into two mixing bowls. Toss 3 peeled and 1/8-inch sliced yams in one bowl and 4 peeled and 1/8-inch sliced Yukon gold potatoes in the other to coat with the cream.
heavy cream2 cupswhite pepper (, to taste)Yukon gold potatoes (, peeled and thinly sliced into 1/8-inch rounds)4
4
Slightly overlap the yams in a single layer in the prepared baking dish. Sprinkle with 1 teaspoon of fresh chopped thyme. Then slightly overlap the Yukon gold potatoes on top of the yams in a single layer, followed by another teaspoon thyme. Repeat this process until the dish is filled just below the top. (Alternatively, you can overlap both types of potatoes in each layer for more of a checkerboard look.)
fresh chopped thyme (, divided)3 teaspoonsYukon gold potatoes (, peeled and thinly sliced into 1/8-inch rounds)4
5
Pour the cream from the bowls over the top of the dish until it sits just below the top of the potatoes/yams.
6
Cover tightly with foil and transfer to a rimmed baking sheet.
7
Bake for ⏱️ 45-60 minutes, until a knife is easily inserted in the center without much resistance (the exact time depends on how thin or thick the sliced potatoes are.)
8
Melt 2 tablespoons butter and mix with 1/4 cup panko breadcrumbs, 1/4 cup Parmesan, and 1 teaspoon fresh chopped thyme.
butter (, softened and divided)3 tablespoonscup panko breadcrumbs1/4fresh chopped thyme (, divided)3 teaspoons
9
Remove the foil and evenly sprinkle the breadcrumb mixture over the top. Place back in the oven and bake, uncovered, until the crumbs are golden brown.
10
Let rest 10 to ⏱️ 15 minutes before cutting. This gives the cream sauce time to settle and thicken a bit and will make it easier to serve.
Nutrition Facts
calories
513 kcal
fat Content
27 g
serving Size
1 serving
fiber Content
9 g
sugar Content
3 g
sodium Content
138 mg
protein Content
7 g
trans Fat Content
0.2 g
cholesterol Content
81 mg
carbohydrate Content
62 g
saturated Fat Content
17 g
unsaturated Fat Content
8 g
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