Preheat the oven to 350F. Line a baking sheet with parchment paper and set aside.
Make the filling:
In a small 2-3 quart saucepan, combine the strawberries, sugar, and honey with a splash of water. Heat over medium heat, bringing the mixture to a simmer for about 10 minutes until it’s the consistency of jam.
Once the strawberries have broken down, remove from the heat, and allow it to cool completely. You can skip this part, and use your favorite jam or fresh fruit instead.
Shape the dough:
On a lightly floured surface, roll your pie dough to ⅛-inch thick. Cut the dough into 12, 3x4-inch, rectangles. You will need two rectangles per poptart. You’ll probably need to re-shape and recut dough as you go along.
Assemble:
Fill a small dish with milk and set it next to your baking sheet. Place one row of rectangles onto the lined baking sheet. Spoon approximately 1 tablespoon of strawberry filling onto the center of each rectangle, making sure the filling doesn’t get too close to the edges. Carefully, with a pastry brush or your finger, brush milk onto the edges of the dough.
Top each bottom rectangle with a second piece of rectangular dough. Using your fingers, press down the edges. Then, with a fork, lightly press down to seal the edges of the dough all around. With a sharp knife, cut a 3 or 4 small slits in the top of each poptart (about ½ inch each).
Bake:
Bake the pastries in the preheated oven, until golden brown, for about 25 to 30 minutes. Remove from the oven and allow them to cool completely.
Make the icing:
Beat the egg white on medium-high speed until peaks form. Add the powdered sugar, mixing gradually, and add the vanilla toward the end. Once the frosting is finished, spread onto each poptart and enjoy!
Notes
MOM Tip: Make "mini" poptarts with the leftover filling and dough scraps.