1/2 box lasagna noodles
1 onion
1 stick butter
12 servings instant mashed potatoes
1 lb. American cheese

Cook lasagna noodles, saute onion in butter. Prepare potatoes according to box directions. Spread some butter and onions in bottom of 9x13 inch pan. Layer noodles, potatoes, onions, cheese twice. Finish with noodles; pour onions and butter over top. Cover with cheese. Bake at 350 degrees for 45 minutes.