"This tasty potato gratin side dish combines great garlic and onion flavor, and kids love the nice crispy topping, too! —Jennifer Olson, Pleasanton, California..."
INGREDIENTS
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1 medium onion, thinly sliced
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2 tablespoons butter
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2 tablespoons all-purpose flour
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2 garlic cloves, minced
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1 teaspoon salt
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1/2 teaspoon pepper
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1 cup whole milk
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2 pounds medium Yukon Gold potatoes, peeled and cut into 1/8-inch slices