Pierogi Casserole
["6 c. mashed potatoes", "8 oz. cream cheese", "1 tsp. salt", "1 small jar Cheez Whiz (8 oz.)", "3 to 4 medium onions, sliced", "3 sticks margarine", "1 lb. lasagna noodles, cooked"]
["Mix potatoes, cream cheese, salt and Cheez Whiz in a bowl. Saute onion in butter in skillet until brown.", "Layer noodles, potatoes and onion mixture alternately in a buttered 9 x 13-inch dish until all ingredients are used, ending with onion mixture. Bake, covered, at 300\u00b0", "for 20 minutes.", "Uncover.", "Broil until brown."]
["potatoes", "cream cheese", "salt", "onions", "margarine", "lasagna noodles"]