1 C. grated Parmigiano Reggianno
2/3 C. regular or light mayonnaise
2 T. minced onion
40 white bread rounds about 1 inch in diameter

Mix cheese, mayo and onion and spread over bread rounds. Refrigerate if desired. To serve, preheat broiler and broil the puffs about 4 inches from heat for 1-2 minutes until tops bubble and brown slightly. Watch carefully, they burn quickly.

To make Gorgonzola puffs substitute 1/2 cup Gorgonzola cheese and 1/2 cup cream cheese for the Parmesan, mixed together with the mayo and onion.