Polenta with Meat Sauce

Name: Polenta with Meat Sauce
Ingredients: 4 tablespoons olive oil; 1 1/2 pounds mild Italian sausage, casings removed; 2 carrots, chopped; 1 onion, chopped; 4 cloves garlic, minced; 1/3 cup dry white wine; 1 1/2 cups canned crushed tomatoes in thick puree (from one 15-ounce can); 3/4 cup canned low-sodium chicken broth or homemade stock; 6 tablespoons chopped fresh parsley; 1 bay leaf; 1 3/4 teaspoons salt; 1/4 teaspoon fresh-ground black pepper; 3 tablespoons light cream; 4 1/2 cups water; 1 1/3 cups coarse or medium cornmeal; 3 tablespoons grated Parmesan, plus more for serving