Scalloped Potatoes - cooking recipe

Ingredients

1/4 c. chopped onion
1/4 c. butter
1/4 c. flour
2 1/2 c. milk
5 c. thinly sliced potatoes
3/4 c. shredded American cheese (if desired to stir in sauce)

Preparation

Cook onion in butter or margarine until tender, not brown. Stir in flour, 1 1/2 teaspoons salt and 1/8 teaspoon pepper.
Add milk.
Cook and stir until thickened and bubbly.
Cook and stir 1 to 2 minutes more.
Remove from heat.
Place half of the sliced potatoes in a greased 2-quart casserole.
Cover with half of the sauce.
Repeat layers.
Bake, covered, in a 350\u00b0 oven for 45 minutes, stirring once.
Uncover; bake about 30 minutes more or until potatoes are done.