Scalloped Potatoes
["5 lb. potatoes, sliced", "diced ham", "1 stick margarine", "1/2 c. flour", "8 c. milk"]
["Put potatoes in deep baking dish and add diced ham as desired. To make sauce in saucepan, mix the remaining ingredients and stir until thickens.", "Pour over potatoes and bake at 350\u00b0 for 3 hours."]
["potatoes", "ham", "margarine", "flour", "milk"]