Sweet Potato Gratin
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Sweet Potato Gratin
Category
Vegetables

Ingredients
Ingredients
- 3 tablespoons Fustini's Herbs de Provence olive oil, divided, plus more for foil
- 1 tablespoon garlic clove, chopped
- 2 tablespoons chopped fresh thyme leaves, plus more for serving
- 1 tablespoon chopped fresh sage leaves
- Kosher salt
- 1 cup heavy cream
- 3/4 cup whole milk
- 1/4 teaspoon ground cinnamon
- 1/4 teaspoon ground nutmeg
- 2 large eggs
- 3/4 cup grated Parmesan (about 2 oz.), divided
- Freshly ground black pepper
- 2 lb. sweet potatoes, peeled and sliced 1/8" thick
- 2 2/3 cup shredded Gruyère cheese (about 8 1/2 oz.), divided
Directions
- Preheat oven to 375°,. Grease a 2-quart casserole or gratin dish with 1 tablespoon of olive oil. In a small saucepan over medium heat, add 2 tablespoons of olive oil. Add garlic and cook, stirring, until fragrant, about 30 seconds. Add thyme, sage, and 1/2 teaspoon salt and cook, stirring occasionally, until heated through, about 30 seconds. Add cream, milk, cinnamon, and nutmeg. Bring to a simmer (do not let boil) and cook, stirring occasionally, until slightly thickened, about 5 minutes. Remove from heat.
- In a medium bowl, beat eggs. Transfer 1 cup cream mixture to a liquid measuring cup or bowl with a spout. Whisking constantly, slowly stream the cream mixture into eggs a few tablespoons at a time until incorporated. Add egg mixture to saucepan with remaining cream mixture and whisk until combined. Whisk in 1/2 cup Parmesan.
- Line the bottom of the prepared dish with a layer of potatoes, slightly overlapping slices, season with a pinch of salt. Top with 2/3 cup Gruyè,re and 2/3 cup cream mixture. Repeat 3 times, ending with cream mixture. Top final layer with remaining 1/4 cup Parmesan.
- Butter a piece of foil and tightly cover the dish. Bake gratin for 30 minutes, uncover, and continue to bake until sides are bubbling and golden brown, about 30 minutes more. Top with thyme.
Recipe Note
A delicious change from the traditional Thanksgiving side dish, or when comfort food is needed. Adapted from delish.com