Preheat oven to 400°F and line a baking sheet with parchment paper.
Flour your work surface and roll out one of the pie crusts. Cut the edges off the sides to create a square and divide into 4 equal rectangles. Repeat with the second pie crust.
Mix the jam, chopped strawberries, and cornstarch in a bowl.
Spoon 2 tablespoons of the jam and strawberry mixture onto one end of each strip of pie crust.
Fold the other end of the pie crust in half so that it is covering the jam. Use a fork to crimp all of the edges to close the pop tart.
Place the pop tarts on the baking sheet and bake for 15-17 minutes or until golden brown.
While the pop tarts are in the oven, prepare the frosting.
Mix the powdered sugar, heavy cream, and the jam in a bowl to create the frosting.
Once the pop tarts are done baking, let them cool completely. After they have cooled, add the frosting to the top of each pop tart and add sprinkles.