French Onion Soup - cooking recipe

Ingredients

1 1/2 lb. onions, sliced thin
1/4 c. butter
3 (10 oz.) cans beef broth
1/4 tsp. salt and pepper
1 tsp. Worcestershire sauce

Preparation

Cook onions in butter for 20 minutes; add broth and Worcestershire sauce.
Bring to a boil.
Season with salt and pepper.