SCALLOPED POTATOES SCALLOPED POTATOES Ingredients 4 pounds round white potatoes or red-skin potatoes, peeled and rinsed 4 tablespoons butter 1/3 cup King Arthur Unbleached All-Purpose Flour 3 1/2 cups whole milk 1 teaspoon onion powder, optional 1 teaspoon salt Instructions Preheat the oven to 350°F. Lightly grease a 9" x 13" pan or 2-quart casserole.