Slow Cooker Kielbasa and White Bean Stew with Tomatoes and Spinach

Name: Slow Cooker Kielbasa and White Bean Stew with Tomatoes and Spinach
Prep time: 15 min
Total time: 15 min
Cuisine: European
Ingredients: 1 lb. (2 cups) dried small white beans; 1 onion, chopped into fairly small pieces; 1 T finely minced garlic; 1 tsp. dried rosemary, crushed; 1/2 tsp. dried thyme, crushed; 6 cups homemade chicken stock or canned chicken broth; 1 can (14.5 oz.) petite dice tomatoes; 14 oz. Kielbasa sausage, cut into half-moon slices (use low-fat turkey Kielbasa for South Beach Diet); 4 packed cups fresh spinach, coarsely chopped; freshly grated Parmesan cheese for serving (optional)