Toasted Onion Canapes

20 two inch bread rounds
3/4 c. minced onion
1/2 c. mayonaise or salad dressing
1/4 c. grated Parmesan cheese

Set oven control at broil and/or 550. Place bread rounds on baking sheet and toast one side under broiler just until brown. Mix onion, mayonnaise and cheese; spread on untoasted side of bread rounds. Broil 3 inches from heat 2-3 minutes or until golden brown. Makes 20 canapes.