1 lg. lean ground beef
1/3 c. finely chopped onion
1 box macaroni and cheese
1 can tomato soup
3 slices cheese

Lightly brown ground beef and onion in fry pan; drain. Prepare macaroni and cheese as directed on package. Layer ingredients in 1 1/2-quart greased casserole dish, layering half of meat mixture, soup, then macaroni. Repeat. Bake at 350 degrees for 45 minutes. Top with cheese slices during last 5 minutes of baking time. Makes 4 servings.