Ingredients:

• 1/4 cup chopped onion
• 1/4 cup butter or margarine
• 1/4 cup all-purpose flour
• 2 1/2 cups milk
• 5 large potatoes, peeled and thinly sliced (5 cups)

Instructions:

1. To make sauce, cook onion in butter or margarine till tender but not brown.
2. Stir in flour, 1½ teaspoons salt, and ⅛ teaspoon pepper.
3. Add milk. Cook and stir till thickened and bubbly. Cook and stir 1 to 2 minutes more. Remove from heat.
4. Place half of the sliced potatoes in a greased 2-quart casserole. Cover with half of the sauce. Repeat layers.
5. Bake, covered, in a 350° oven 45 minutes, stirring once.
6. Uncover; bake about 30 minutes more or till potatoes are done. Makes 4 to 6 servings.
7. For Cheesy Scalloped Potatoes: Prepare Scalloped Potatoes as above, except reduce salt to 1 teaspoon; stir ¾ cup shredded American cheese into sauce till melted.