French Onion Soup AuGratin

By Czech22

Ingredients

• 4 large sweet onions, thinly sliced
• 4 T butter
• 4 cans beef broth
• 1/2 C dry Sherry
• 2 t worcestershire sauce
• dash of pepper
• 6 slices french bread, sliced 1/2 " thick, toasted
• 3/4 parmesan cheese
• 5 slices gruyere or swiss cheese

Preparation

Step 1

In a large sauce pan, cook onion in butter until tender but not brown, about 20 minutes. Add beef broth, sherry, worcestershire and pepper. Bring to a boil. Pour into 6 bowls. Float a slice of french bread in each, sprinkle generously with parmesan and top each with a slice of cheese.