Remove the puff pastry dough from the freezer and let it thaw.
Preheat your oven to 350°F.
Prepare the filling by combining the softened cream cheese, pumpkin puree, pumpkin pie spice, cinnamon, and brown sugar in a bowl.
Once your puff pastry dough is thawed, unfold the sheet.
Cut both sheets into nine even squares, giving you a total of 18 squares.
Add about a tablespoon of filling to each square.
Beat an egg in a bowl and brush the egg wash on the outer portion of the squares.
Fold each square to form a triangle.
Brush the top of the triangles with egg wash and place them in a preheated oven at 350°F for 12-15 minutes until they are golden brown.
While the pastelito (puff pastries) are in the oven, combine the sugar and water in a medium sauce pot.
Place the pot over medium-high heat and continuously stir until all the sugar is dissolved and the mixture comes to a boil.
Remove from the heat and set aside.
Once the pastelito (puff pastries) are out of the oven, brush the top of them with the sugary syrup.
Serve and enjoy!