Sauté onion in butter over medium heat until onions are translucent. Add ground beef and sauté until browned. Add seasoned salt, pepper, garlic salt and Worcestershire sauce. Add tomato bisque soup and Italian stewed tomatoes. Simmer 20 minutes; cover if necessary. Cook broad noodles (do not overcook). Mix together. Sprinkle with cheese in casserole. Bake, uncovered, 30 minutes at 350 degrees.