French Onion Soup
["1/4 c. butter or margarine", "6 medium onions, thinly sliced", "6 c. beef stock or 4 (10 oz.) cans beef consomme", "1/4 c. sherry", "6 slices French bread, toasted", "1/2 c. grated Mozzarella cheese"]
["In a stock pot, melt butter.", "Saute onions until tender.", "Add stock; simmer for 20 minutes.", "Stir in sherry.", "Pour soup into individual ovenproof soup crocks or soup tureen.", "Float toast on top; sprinkle with cheese.", "Broil 4 inches from heat, until cheese melts and begins to brown.", "Serve at once."]
["butter", "onions", "beef stock", "sherry", "bread", "Mozzarella cheese"]