2 lb. potatoes (about 6)
3 tbsp. butter
3 tbsp. flour
Salt & pepper
2 1/2 c. milk
1/4 c. chopped onion
1 tbsp. butter

Heat oven to 350 degrees. Wash potatoes, pare thinly and remove eyes. Cut potatoes into thin slices to measure 4 cups. Melt 3 tablespoons of butter in saucepan over low heat. Blend in flour and seasonings. Cook over low heat; stirring until mixture is smooth and bubbly. Remove from heat. Stir in milk. Heat to boiling, stirring constantly. Boil 1 minute.

In greased 2 quart casserole, arrange potatoes in 2 layers, topping each with half of onions and 1/3 of white sauce. Top with remaining potatoes and sauce. Dot with 1 tablespoon butter. Cover. Bake for 30 minutes. Uncover and bake 60-70 minutes until potatoes are tender. Let stand 5-10 minutes before serving. (Also good to add ham.)