In a large stock pot over medium heat, melt the butter.
Add pepper, onion, celery, and ground beef, cooking until beef is browned.
Remove from heat, and stir in the noodles, tomato soup, chicken noodle soup, cream of mushroom soup, salt, and pepper.
Spread into a large casserole dish.
Bake at 325 degrees for 1 hour, or until heated through.
Serve hot.