6 to 8 med. potatoes, peeled
1 med. onion, chopped fine
1/4 tsp. salt
1/4 tsp. pepper
3 c. milk
3 tbsp. flour
3 tbsp. butter
3/4 c. American or Cheddar cheese, diced (I use more)

Slice potatoes 1/8 inch; layer in buttered 2 quart dish with onion, salt and pepper. Melt butter and stir in flour. Add milk, stirring constantly, over low heat until thick; stir in cheese. When cheese is nearly melted, pour sauce over potatoes. Cover and bake at 350 degrees for 1 hour. Remove lid and continue to bake for 30 minutes more until golden crust forms on top. Makes 4 to 6 servings.