Pierogi Casserole
["9 to 12 lasagna noodles", "1/2 lb. Longhorn cheese", "2 medium onions, chopped", "4 c. cooked mashed potatoes", "3/4 lb. melted butter or oleo"]
["Cook noodles as directed on package.", "Saute onions in oleo until tender.", "Add cheese to hot mashed potatoes; mix.", "Place 3 noodles in 9 x 13-inch baking dish.", "Put 1/2 of potato mixture over noodles and 1/3 of the onion mixture and spread evenly. Place 3 more noodles and the rest of the potato mixture.", "Add remaining noodles and onion mix.", "Cover well with onion mixture. Bake at 325\u00b0 for 1 hour.", "Cover with foil."]
["lasagna noodles", "Longhorn cheese", "onions", "potatoes", "butter"]