French Onion Soup - cooking recipe

Ingredients

1 large yellow onion
1/4 lb. real butter
2 beef bouillon cubes

Preparation

Peel onion and slice thinly. Melt butter slowly in pan.
Add onion and cook slowly over low heat, stirring often, until onion is golden brown. Add 6 cups water and the bouillon cubes.
Cook at least 1 hour. Sprinkle with Parmesan cheese when served.