Classic French Onion Soup | Swanson® Recipes

Ingredients

• 1 tablespoon vegetable oil
• 2 extra large onion, cut in half and thinly sliced (about 4 cups)
• 1/2 teaspoon sugar
• 3 tablespoons all purpose flour
• 2 1/2 cups Swanson® Beef Broth
• 2 1/2 cups Swanson® Chicken Broth
• 6 tablespoons dry vermouth&#160;<strong>or</strong> white wine
• 1 cup shredded Gruy&#232;re cheese
• 1/3 cup mozzarella cheese
• 4 slices French bread, toasted