Mystery Canapes
["1/2 c. Parmesan cheese", "3/4 c. mayonnaise", "1/2 c. finely chopped onion", "dash of Worcestershire sauce", "salt and pepper to taste", "1 loaf cocktail rye bread"]
["Blend together first 5 ingredients. Spread on bread slices. Broil 3 minutes or until bubbly."]
["Parmesan cheese", "mayonnaise", "onion", "Worcestershire sauce", "salt", "cocktail rye bread"]