1 1/2 c. macaroni
1 lb. ground beef
1/2 c. chopped onions
2 (8 oz.) cans tomato sauce with mushrooms
1 tsp. salt
1/2 tsp. pepper
1/2 c. grated Cheddar cheese

Cook macaroni as directed. Brown the ground beef in a skillet. Transfer drained macaroni and beef and all other ingredients (except cheese) to a greased baking dish. Spread cheese on top and bake at 350 degrees for 25 minutes.