Cut each crust into equal-sized rectangles. (I used a pizza cutter. You can also combine the leftover dough, re-roll it out, and then cut more rectangles)
Place 1 tablespoon of fruit spread in the center of half of the rectangles. spread the jam out to within ¼ inch of the edge.
Use your finger to moisten the outside of each pie crust with water.
Top each filling rectangle with another pastry rectangle. Press the seams together and fork the edges so they stay together.
Preheat your air fryer or oven to 350°F. Open up the air fryer and spray the basket with cooking spray.
Place two of the PopTarts in the basket.
Cook the PopTarts for about 10 minutes or until browned.
Repeat with remaining pop tarts.
While the PopTarts are cooking, make the icing. In a small bowl, whisk together the powdered sugar, heavy cream, butter, and vanilla extract until well combined.
Spread the cooled PopTarts with frosting and sprinkles. Let the frosting harden and enjoy!