12 lasagne noodles
4 c. cooked mashed potatoes
3/4 lb. melted butter
2 med. onions, chopped
1/4 lb. grated longhorn cheese

Cook noodles according to package directions and drain. Saute onions in butter. Add grated cheese to hot mashed potatoes and mix well. Add 1/4 cup onion and potato mixture. Place 4 noodles in 9"x13" pan. Put 1/2 the potato mixture over noodles. Add final 4 noodles and top with remaining onion-butter mixture. Cover with foil and heat to 300 degrees for 1/2 hour.