Preheat oven to 350 degrees. Line tassie pans with foil papers, and place one vanilla wafer into each cup. Trim wafers if needed to fit bottom.
In a large mixer bowl, combine cream cheese, sugar and vanilla and beat until smooth and creamy. Add eggs one at a time and blend after each on low speed. Do not overbeat. Spoon batter into each cup, 3/4 full.
Bake in preheated oven for 15 minutes. Do not allow tassie tops to brown. They will puff during baking and fall when cool. Remove from oven and let cool for 5 minutes in the pan. Remove from pan and cool on wire rack. When cooled completely, top each tassie with 1 teaspoon of pie filling. Refrigerate tassies until ready to serve. Makes 4 dozen tassies. Enjoy!