Winter Cassoulet

Name: Winter Cassoulet
Ingredients: 1 tablespoon olive oil; 1 pound Italian sausage, casings removed; 1 1/2 cups chicken broth; 1 onion, thinly sliced; 3 carrots, cut into 1/2-inch dice; 3 parsnips, cut into 1/2-inch dice; 1 tomato, chopped, or one 8-ounce can whole tomatoes, drained and chopped; 3 15-ounce cans of great Northern, cannellini, or navy beans, drained and rinsed; 5 sprigs fresh thyme or 1 teaspoon dried thyme leaves; 1/2 teaspoon salt; 1/8 teaspoon freshly ground pepper; 3 cloves garlic, minced; 1 cup plain breadcrumbs; 1/4 cup chopped fresh parsley; 2 tablespoons salted butter, melted