French Onion Soup
["4 large yellow onions", "8 Tbsp. butter", "1 Tbsp. flour", "6 c. simmering beef broth", "salt and pepper to taste", "6 slices French bread", "3/4 c. grated Swiss cheese", "1/4 c. Parmesan cheese, grated"]
["Peel onions and slice them thinly.", "Separate slices into rings.", "Saute onion rings in hot butter in a skillet until softened and then lightly stir in flour.", "Add onions to hot broth. Cover saucepan and simmer for twenty minutes.", "Taste soup and add salt and pepper to taste."]
["yellow onions", "butter", "flour", "simmering beef broth", "salt", "bread", "Swiss cheese", "Parmesan cheese"]