Preheat the oven to 350°F and line a baking sheet with parchment paper.
Prepare the pumpkin pie filling by combining pumpkin puree, coconut sugar, pumpkin pie spice, cinnamon, vanilla extract, and salt in a bowl. Set aside.
Flour a clean work surface and unroll the pre-made pie crust. Roll it out to about 1/8" thickness and trim the edges to form a rectangle.
Cut the pie crust into four equal parts both vertically and horizontally. Repeat with the other pie crust.
Arrange four cut-out pie crusts on the baking sheet.
Spoon about 2-3 tablespoons of filling onto each section, spreading it evenly and leaving a 1-inch border.
Top with the remaining pie crust pieces, pressing the edges together with a fork. Poke holes in the tops and bake for 25-28 minutes until lightly golden.
Let cool slightly before preparing the frosting. Combine all frosting ingredients in a bowl, whisk until smooth, and spread over each pop-tart. Sprinkle with cinnamon and enjoy!