Preheat the oven to 400 degrees Fahrenheit (200 degrees Celsius). Line a baking sheet with parchment paper, and set aside.
In a saucepan over medium heat, melt 5 tablespoons of unsalted butter.
5 Tablespoons unsalted butter
Stir in ½ cup of dark brown sugar, chopped pecans, and a pinch of salt. Cook for a few minutes, stirring occasionally, until the mixture thickens slightly.
½ cup dark brown sugar, 1 ½ cups chopped pecans, Pinch of salt
Add ¼ cup of heavy cream and 1 teaspoon of vanilla extract to the mixture. Cook for an additional 1 minute, stirring continuously. Remove from heat, and let it cool for a few minutes.
¼ cup heavy cream, 1 teaspoon vanilla extract
While the pecan topping is cooling, prepare the puff pastry. Roll out the thawed puff pastry sheet and cut it into 6 equal rectangles.
1 puff pastry sheet
Place a tablespoon of the cooled pecan filling in the center of each puff pastry rectangle.
Pull the corner of each puff pastry into the center, crossing them over one another to create a “pocket” similar to a dumpling.
In a small bowl, beat an egg to create an egg wash. Brush the egg wash over the tops of the puff pastry to seal the filling and give them a golden-brown finish.
1 large egg
Place the filled and sealed puff pastries on the prepared baking sheet. Transfer the pastries to the freezer for 10-15 minutes before baking. (This prevents them from spreading too much as they bake!)
Bake in the preheated oven at 400°F for about 15 minutes or until the puff pastry is golden brown and puffed up.
Remove from the oven, and allow the pecan pie puff pastries to cool slightly before serving.