1 box macaroni and cheese
1 lb. ground chuck
1 sm. onion, diced
1 (32 oz.) Prego spaghetti sauce
1 c. sliced mushrooms
1 pkg. shredded Mozzarella or Cheddar cheese

Cook macaroni and cheese as directed on package. Brown hamburger and onion and mushrooms. Drain fat from hamburger. Add mushrooms and sauce. Simmer about 30 minutes. Top with shredded cheese.