Saute sausages in a Dutch oven until browned. Discard excess fat.
Add carrots, celery, onion, red bell pepper, and garlic. Saute until the onion is limp and translucent.
Add broth, basil, tomatoes with juice, and beans. Bring to a boil. Add pasta, reduce heat, and simmer until the pasta is tender.
Skim any excess fat. Stir in spinach and cook till wilted, about 30 seconds.
Season with salt and pepper to taste. Garnish with Parmesan.
