Cook frozen egg noodles according to package instructions, drain well.
Brown ground beef and Italian sausage in large pan, drain fat.
Add green peppers, celery and mushrooms and saute until tender.
Add tomatoes and soup, mixing well.
Pour into a large casserole or two small casseroles. (you may freeze one or both at this point.You can cook from frozen, just put the casserole in the oven while it is heating and add 15 minutes to cooking time.).
Cover and bake at 350 degrees for 35 – 45 minutes or until heated through and bubbly.
Sprinkle with cheese and bake another 10 minutes, uncovered until cheese melts.