Preheat oven to 350 degrees F. Line a baking sheet with parchment paper and set aside.
Add pie filling to a blender and puree.
On a cutting board, or lightly floured surface, roll out pie crust and cut out Pop Tart pieces with a 2-inch heart cookie cutter.
Lay bottoms of Pop Tarts on the prepared baking sheet.
Spoon 1-2 tablespoons of pie filling on each heart piece.
Place another heart piece on top and, using a fork, press the sides together.
Whisk one egg yolk with a teaspoon of water. Using a pastry brush, brush the egg wash over the tops of each Pop Tart.
Sprinkle the brushed Pop Tart with sugar.
Using a sharp knife, cut two slits in the middle to resemble a heart.
Bake for 10 minutes or until golden brown.