Braised Beef with Shallots and Mushrooms

Name: Braised Beef with Shallots and Mushrooms
Ingredients: 1 beef chuck pot roast, cut into serving-sized pieces (about 1 1/2 pounds); 1/4 cup all-purpose flour; 3 tablespoon butter; 1/2 pounds small shallots, peeled; 1 cup Swanson® Beef Stock; 2 medium tomatoes, chopped (about 2 cups); 3 tablespoon balsamic vinegar; 1 tablespoon packed brown sugar; 2 large carrots, cut into 2-inch pieces (about 1 cup); 2 cups mushrooms, cut into quarters (about 5 ounces); 1/4 cup chopped fresh parsley; 2 tablespoon grated lemon zest