Combine beans, crushed garlic, onion, carrots, tomatoes, thyme, bay leaves and meats in a slow cooker, and turn heat to high. (If you like, brown sausage and duck legs in a skillet before adding.) Add stock or water to cover by 2 inches. Cover and cook until beans and meats are tender, 5 to 6 hours on high heat, 7 hours or more on low.
Step 2
When done, add salt and pepper to taste, along with minced garlic. If you like, remove cassoulet from slow cooker, and place in a deep casserole; cover with bread crumbs and roast at 400 degrees until bread crumbs brown, about 15 minutes. Garnish and serve.