1 lb. ground beef
1 med. onion, chopped
1 lb. macaroni, cooked & drained
4-8 oz. mushrooms, stems & pieces fine
1/2 lb. yellow cheese or Velveeta cheese

Brown onion and ground beef. Drain off fat. Mix all other ingredients together well and heat until cheese melts and dish is piping hot. Salt and pepper to taste. NOTE: Green pepper can be added with onion and ground beef if desired. Served with salad and bread, good enough for company.