"Flavored with onion, garlic, and thyme, these savory mini souffles get their cheesy, crusty tops from melted Gruyere cheese. Serve them warm from the oven as a side dish, and eat them with a spoon...."
INGREDIENTS
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1 tablespoon butter, plus more for baking dishes
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1/2 small onion, finely chopped (1/2 cup)
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1 small garlic clove, minced
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1/2 teaspoon dried thyme
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Coarse salt and ground pepper
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1 tablespoon flour
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1/2 cup milk
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3/4 cup coarsely grated Gruyere cheese
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1 cup Sweet-Potato Puree
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3 large eggs, separated