Sweet Potato Soufflé

3.0
(3,459)

These mashed sweet potatoes are topped with Gruyère then baked so that the cheese forms a nutty-flavored crust.

Sweet Potato Souffle
Photo: © Lucy Schaeffer
Active Time:
25 mins
Total Time:
2 hrs 50 mins
Yield:
12

Ingredients

  • 3 pounds large sweet potatoes

  • 6 tablespoons unsalted butter, softened

  • 1/2 cup heavy cream

  • 1/2 cup shredded Gruyère cheese

  • 2 tablespoons light brown sugar

  • 1 teaspoon chopped thyme

  • Salt and freshly ground pepper

  • 3 large eggs

Directions

  1. Preheat the oven to 350°. Bake the sweet potatoes for 1 1/2 hours, or until tender. Raise the oven temperature to 425°.

  2. Peel the sweet potatoes as soon as they are cool enough to handle; transfer to a bowl. Using a handheld electric mixer, beat the sweet potatoes with the butter until smooth. Beat in the cream, Gruyère, brown sugar and thyme; season with salt and pepper. Beat in the eggs one at a time, beating well after each addition.

  3. Transfer the sweet potato puree to a buttered 8-by-11-inch baking dish and bake for 15 minutes. Reduce the oven temperature to 400° and bake for 30 minutes longer, or until the sweet potatoes are lightly puffed and browned. Let the sweet potato soufflé rest for 10 minutes before serving.

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