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Sweet Potato & Gruyère Cheese Soufflé

This recipe is perfect for you if you’re looking for a special gourmet dish to present instead of the same-ol’, same-ol’ yams with marshmallows at your holiday party. The smokey Gruyère is an amazing accent to the sweetness of the potatoes. It’s a little bit of work, but you’ll be rewarded by the delicious end result.


1/2 cup freshly grated Parmesan
1 cup finely chopped onion
1 large garlic clove, minced
2 tablespoons unsalted butter
2 tablespoons all-purpose flour
1 cup milk
1 cup coarsely grated Gruyère (about 3 ounces)
2 cups mashed cooked sweet potatoes (about 1 1/2 pounds)
4 large eggs, separated

Butter a 1 1/2-quart soufflé dish and dust it with 1/4 cup of the Parmesan. In a large heavy saucepan cook the onion and the garlic with salt and pepper to taste in the butter over moderately low heat, stirring, until the onion is softened, stir in the flour, and cook the roux, stirring, for 3 minutes. Add the milk in a stream, whisking, and simmer the mixture, whisking, until it is thickened.

Remove the pan from the heat, whisk in the Gruyère, whisking until the cheese is melted, and whisk in the sweet potatoes and the egg yolks, 1 at a time. In a bowl with an electric mixer beat the egg whites with a pinch of salt until they just hold stiff peaks, whisk one fourth of them into the sweet potato mixture to lighten it, and fold in the remaining whites gently but thoroughly. Pour the mixture into the prepared soufflé dish, sprinkle the remaining 1/4 cup Parmesan over it, and bake the soufflé in the middle of a preheated 375°F. oven for 45 to 50 minutes, or until it is puffed and golden. Serve the soufflé immediately.

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