Au Gratin Potatoes
["3 Tbsp. butter or oleo", "3 Tbsp. flour", "3 c. milk", "1 tsp. salt", "1/2 c. cheese", "1/4 tsp. pepper", "6 medium potatoes, peeled and sliced thin", "2 Tbsp. chopped onion", "1 c. diced ham"]
["Make white sauce of first 6 ingredients.", "Put in greased 2-quart casserole.", "Use half of the potatoes, onion and sauce, then repeat the layer.", "Cover and bake at 350\u00b0 about 1 hour. Uncover and continue baking until brown."]
["butter", "flour", "milk", "salt", "cheese", "pepper", "potatoes", "onion", "ham"]