In a Dutch oven, cook sausage and ground beef over medium heat until meat is cooked and browned; drain.
Stir in onion, celery and garlic.
Cook and stir until tender.
Add tomatoes, beans, broth, tomato paste, sugar, chili powder, Worcestershire sauce, cumin and red pepper flakes.
Bring to a boil; reduce heat, cover and simmer for 20 minutes, stirring occasionally.
Serve with cheese, sour cream and onion.