In a food processor, process together your flour and salt. Add your very cold butter a few pieces at a time over the top and pulse for a few seconds.
Sprinkle half of the ice water over your flour mixture and mix gently to dampen flour. Add the remaining water in two stages and continue to pulse or stir until a dough forms. When enough water has been added to allow dough to hold together, gather it into a ball and transfer to lightly floured surface. Press dough into a flat disk, then place in large zipper bag. Refrigerate dough for at least an hour or overnight.
When ready, cut your dough in half. Keep the second half wrapped in plastic wrap and in the fridge. Roll out one half of the dough onto a lightly floured surface to a 13 by 11 inch rectangle (about 1/4 inch thick). Trim dough so sides are even and straight, to a 12 by 10 inch rectangle.
Start Here After Crust is Made/Using Store Bought Crust:
Preheat your oven to 350 degrees F, line a large baking sheet with parchment paper.
Roll out one half of your dough onto a lightly floured surface to a 13 by 11 inch rectangle (about 1/4 inch thick). Trim dough so sides are even and straight, to a 12 by 10 inch rectangle.
Cut the dough into eight 5 by 3 inch rectangles. Arrange half of your rectangles onto your prepared parchment lined baking sheet.
Make your filling by whisking together the cream cheese and powdered sugar until smooth and combined. Gently fold in your crushed oreo cookies.
Use about 2 tbsp worth of filling and place it in the middle of the rectangles that are on your baking sheet. Leave about 1/4 inch around the edge.
Place the other rectangles on top of the filled ones. Crimp the edges and pierce the tops with a fork. You should leave a little bit of space between each pop tart.
Bake for 10-12 minutes or until the edges become slightly firm and the center is no longer shiny. Allow to cool on cookie sheet for 5 minutes.
Carefully transfer your pop tarts to a cooling rack to firm up. They may be a little soft fresh out of the oven but don’t worry - they won’t stay that way.
Once your pop tarts have completely cooled, make your icing by whisking together all of your ingredients (expect crushed cookies) until smooth.
Spoon your icing over top of your pop tarts and top with crushed cookies, and enjoy!
Notes
For vegan, make sure you buy a vegan pie crust OR use vegan butter in the crust. Use vegan cream cheese.