1 sm. can tuna
1 pkg. cooked macaroni
1 can cream of mushroom soup
1 sm. can peas

Cook macaroni as directed on the package and drain. Add the rest of ingredients in layers with macaroni on the bottom, followed by soup, the tuna and finally peas. Bread crumbs may be sprinkled on top if so desired. Bake at 350 degrees for 1 hour.