Step 3
Combine beef broth, tomatoes, corn, celery, cabbage, onion, zucchini, wine, parsley, oregano, basil, garlic powder, salt, and pepper in a large pot. Stir in browned meatballs. Simmer soup until vegetables are tender, 35 to 40 minutes. Stir in broken spaghetti and cook until tender, about 20 minutes more.