Pierogie Casserole
["1 pkg. lasagne noodles or 1 bag wide egg noodles", "1 (15 oz.) large jar Cheez Whiz", "4 to 6 boiled potatoes (no seasoning or butter)", "1 to 1 1/2 small onions, diced"]
["Boil noodles and drain.", "(If using lasagne, lay flat until ready to use.)"]
["noodles", "potatoes", "onions"]