Yukon Gold and Sweet Potato Gratin

Name: Yukon Gold and Sweet Potato Gratin
Prep time: 20 min
Cook time: 1 h 15 min
Total time: 1 h 35 min
Yield: 8 servings
Cuisine: American
Ingredients: 6 tablespoons butter; 2¼ pounds Yukon Gold potatoes; 1½ pounds red-skinned sweet potatoes; 2 cups whole milk; 1 clove garlic; 1 tablespoon kosher salt; 2 teaspoons fresh thyme leaves; 1 teaspoon ground black pepper; ⅛ teaspoon ground nutmeg; 1 cup whipping cream

A luxurious layered potato dish combining creamy Yukon Gold and sweet potatoes, baked in a rich mixture of milk and cream with aromatic herbs and spices. This comforting gratin features tender potato slices infused with thyme, garlic, and nutmeg.

8 servings

1 hr 15 min

Published October 4, 2025

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Ingredients

•6 tablespoons butter
•2¼ pounds Yukon Gold potatoes
•1½ pounds red-skinned sweet potatoes
•2 cups whole milk
•1 clove garlic
•1 tablespoon kosher salt
•2 teaspoons fresh thyme leaves
•1 teaspoon ground black pepper
•⅛ teaspoon ground nutmeg
•1 cup whipping cream

Cooking Instructions

1.
Preheat oven to 400°F. Coat 13x9x2-inch glass baking dish with 2 tablespoons butter. Thinly slice all potatoes; place in prepared dish. Bring milk and next 5 ingredients to boil in medium saucepan; pour over potatoes. Dot with 2 tablespoons butter. Cover with foil. Bake until potatoes are tender and milk is almost absorbed, about 50 minutes.
50 min
2.
Bring cream to boil in saucepan. Uncover potatoes, pour cream over, and dot with 2 tablespoons butter. Bake uncovered until top is golden brown in spots, about 25 minutes. Cool slightly.
25 min