"Cheese Herb Potato Gratin is the impressive side dish you'll want for the holidays, but can eat all year long. Impossibly thin leaves of potatoes stack sideways in a skillet with herbs and cheese for a deeply satisfying, comforting dish...."
INGREDIENTS
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1 tablespoon olive oil
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3 medium sweet potatoes
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6 small Yukon gold potatoes
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1 teaspoon kosher salt
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1/4 teaspoon ground black pepper
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3/4 teaspoon garlic powder
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1/2 teaspoon dried thyme
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1/2 teaspoon ground sage
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1 1/2 teaspoons dried parsley (or 1-2 tablespoons fresh chopped parsley)
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1/2 teaspoon dried rosemary (or 2 teaspoons fresh rosemary finely minced)
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8 ounces Gruyère or sharp white cheddar, grated (2 cups)
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1/2 cup thinly sliced yellow onion, chopped
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1/2 cup whole milk or half-and-half
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1/2 cup low-sodium chicken broth
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