Here's a recipe that mom used to make for parties.
Parmesan Rounds (Makes about 120 rounds)
2 loaves of sliced brown bread
Butter
2 (250g) packages cream cheese, at room temperature
1/2 cup butter, melted
1 (120g) can crab meat
1/4 cup plus 2 tablespoons mayonnaise
6 green onions, chopped
Freshly grated parmesan cheese
Using a 1 1/4 to 1 1/2 inch round cutter (or use a shot glass) cut circles from each slice of bread; butter one side of each circle. Arrange in a single layer on a baking sheet. Broil until lightly toasted under a preheated broiler. Turn and broil unbuttered side. Transfer to rack and cool.
Combine cream cheese, butter, crab meat, mayonnaise and green onions in a large bowl. Spread about one heaping teaspoon of mixture over buttered side of bread. Dip in parmesan cheese.
To freeze, place on a baking sheet and place in freezer until firm. Then transfer to a freezer bag or container.
To cook, arrange frozen rounds on a baking sheet and broil until bubbly and golden.
