Mom's Scalloped Potatoes
""This is the way my mother always made her scalloped potatoes. The measurements are taken from other recipes because she always just winged it, but the method is the same. The key is to heat the milk first!"..."
INGREDIENTS
•
3 pounds potatoes, thinly sliced
•
1/2 onion, thinly sliced
•
9 tablespoons all-purpose flour, divided
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6 tablespoons butter, diced and divided
•
salt and ground black pepper to taste
•
3 cups whole milk, or as needed
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