1 1/2 lb. ground round
1 1/2 c. chopped onion
1 (#2) can tomatoes
1 can tomato soup
2 pkg. wide noodles, cooked and drained
1 pkg. Velveeta cheese chunks
1 sm. jar mushrooms (optional)
Grated American cheese

Saute meat and onions; add tomatoes and soup. Simmer a few minutes. Add noodles, Velveeta cheese and mushrooms. Mix well and top with grated cheese. Melt cheese under broiler. 8 to 10 servings.