Hot Onion-Cheese Canapes
["8 slices bread", "1/2 c. mayonnaise", "1/2 c. grated Parmesan cheese (fresh cheese is best)", "2 Tbsp. finely chopped onion"]
["Remove crusts from bread. Cut each slice into quarters. Combine mayonnaise, cheese and onion. Spread on bread.", "Broil about 4-inches from heat until lightly browned.", "Mixture will keep several days in refrigerator.", "Yields 32 squares."]
["bread", "mayonnaise", "Parmesan cheese", "onion"]