Brown Derby's French Onion Soup Recipe

• 1/4 lb butter
• 1 1/2 lb white onions thinly slices
• 1 quart canned beef stock
• 1 quart canned chicken broth
• 1/8 tsp freshly-grnd black pepper
• 1/2 tsp celery salt
• 1/4 tsp salt
• 1 x bay leaf
• 1 Tbsp. Worcestershire sauce

Directions