Cut up onions, celery, green pepper and mushrooms. Add salt and pepper, and sauté in frying pan in butter or margarine. Brown ground beef and boil spaghetti. In a greased casserole dish, pour first layer of onion, celery, green pepper and mushroom mixture. Then add layer of browned, drained ground beef. Add tin of spaghetti sauce over ground beef. Place spaghetti noodles on top. Cover spaghetti with full can of spiced tomatoes. Top off with cheese of choice. Bake at 350°F for 1/2 hour or until cheese melts.