Sweet Potato Gratin
Description
This sweet potato gratin recipe is layered with Gruyère cheese and a cream-based sauce flavored with four fresh herbs — parsley, sage, rosemary, and thyme.
Ingredients
•
cooking spray
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2 cups heavy cream
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1/2 stick unsalted butter
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2 cloves garlic, minced
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1 tablespoon chopped fresh parsley, or more to taste
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1 tablespoon fresh thyme leaves, or more to taste
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1 tablespoon minced fresh sage, or more to taste
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1 tablespoon minced fresh rosemary, or more to taste
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1 1/2 teaspoons sea salt
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3/4 teaspoon ground black pepper
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3 pounds sweet potatoes, peeled and thinly sliced
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1 1/2 cups shredded Gruyere cheese
Directions
1
Preheat the oven to 400 degrees F (200 degrees C). Coat a baking dish with cooking spray.
2
Combine cream, butter, and garlic in a saucepan; bring to a simmer. Off heat, stir in parsley, thyme, sage, rosemary, salt, and black pepper.
3
Arrange ½ sweet potato slices in the prepared baking dish; cover with ½ Gruyère cheese. Pour cream mixture on top. Arrange remaining ½ sweet potato slices over cream; sprinkle remaining ½ cheese on top.
4
Bake in the preheated oven until golden brown and bubbly, about 30 minutes.