Scalloped Potatoes

Directions

1. 1
   To make sauce, cook onion in butter or margarine until tender, but not brown.
2. 2
   Stir in flour, 1 1/2 teaspoons salt and 1/8 teaspoon pepper.
3. 3
   Add milk.
4. 4
   Cook and stir until thickened and bubbly.
5. 5
   Cook and stir 1 to 2 minutes more.
6. 6
   Remove from heat.