Line a baking sheet with parchment paper and set aside
Preheat oven to 350 degrees
Prepare pie crust
Mix the cream cheese and sugar in mixer until fluffy and smooth
Add egg yolk and vanilla extract and mix until combined
Roll out chilled pie crust, I rolled each crust into an approximate 12x12 square
Cut pie crust into four equal squares
Place a heaping tablespoon of the cream cheese mixture on the center of each square and spread the mixture out a little
Add a heaping teaspoon of jam or jelly to the cream cheese
Gently fold each corner of the pastry up to the near center, do not overlap the pastry.
To make the egg wash whisk the egg white and water together, using a pastry brush gently brush wash over the pastry
Repeat with each square
Bake for 15- 20 minutes or until the pie crust is lightly brown and flaky and the bottom if browned
Remove from oven to a rack and let cool
Once cool sprinkle with powdered sugar