"A classic dish of Potatoes Au Gratin, that will have you hooked at first bite. They're perfect for the Holidays or even just a Sunday supper...."
INGREDIENTS
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¼ cup butter (unsalted)
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1 medium onion (chopped)
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3 cloves garlic (minced)
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¼ cup all-purpose flour
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1 cup chicken broth (low sodium or no sodium added)
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2 cups whole milk (or half and half)
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½ teaspoon salt (or to taste)
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½ teaspoon pepper (or to taste)
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1 tablespoon fresh thyme (chopped, for garnish)
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3 pounds potatoes (sliced into ⅛-inch rounds, I prefer Yukon Gold)
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2 cups white cheddar cheese (freshly grated)
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½ cup Parmesan cheese (freshly grated)