French Onion Soup

Ingredients

• 1 large Onion chopped
• 1 tbsp Butter or Margarine
• 1 (10 oz.) can Beef Broth
• 2 tbsp White Cooking Sherry or Wine
• 1/2 tsp Worcestershire Sauce
• 1/8 tsp Pepper
• 2/3 cup Mozzarella Cheese grated
• 2 tsp Parmesan Cheese
• 1/2 cup Croutons