Slow-Cooker French Onion Soup Recipe | Betty Crocker

Ingredients

• Reynolds™ Slow Cooker Liners
• 3 cups sliced onions (3 medium)
• 3 tablespoons margarine or butter, melted
• 3 tablespoons all-purpose flour
• 1 tablespoon Worcestershire sauce
• 1 teaspoon sugar
• 1/4 teaspoon pepper
• 4 cans (14 1/2 ounces each) ready-to-serve beef broth
• 8 slices French bread, 1 inch thick
• 3/4 cup shredded mozzarella cheese (3 ounces)
• 2 tablespoons grated or shredded Parmesan cheese