Preheat oven to 375 degrees F.
Lay out two cookie sheets, line each with parchment. Set aside.
On a clean counter toss a small handful of AP flour, this will help keep the pie dough from sticking.
Take your pie dough out and roll it out gently with a rolling pin. You just want to stretch it a very little bit and try to make more of a rectangle than a circle.
Using a knife, pastry cutter, or even a pizza wheel cut your pie dough into small rectangles, all equal in size. Lay half of them on the cookie sheets.
Beat an egg in a small bowl, brush over top of the dough. The edges are most important, it helps to seal the edges of the pop tarts.
In a medium bowl mix the strawberry pie filling and cinnamon. Stir well. Place a dollop in the middle of each dough you set on the cookie sheet. You want to make a line in the middle with about 1 to 1-½ tablespoons of filling mixture. Stay away from the edges.
Now place the remaining half of your shaped pie dough pieces over top of the filled bottom pieces.
Gently press down the edges with your thumb or forefinger. Use a fork dusted with flour and press down all around the edges. If you have any uneven spots you can trim the edges with a pastry wheel.
If you are not putting icing on them you can brush the top with the egg wash again. If you are using icing on top I'd skip the wash personally.
Poke a few small holes in the top of each pop tart. Nothing drastic.
Place the first cookie sheet in the oven and cook for about 10 to 12 minutes, until lightly golden brown. Remove and allow to cool.
Repeat with second cookie sheet.
In a small bowl mix confectioners sugar and milk really well. You can make the glaze thicker by adding more confectioners sugar. Or you can make it thinner by adding more milk. Everyone likes theirs a bit different so adjust to your own taste. You can add food colouring if you like, or even extracts for added flavour.
Once the pop tarts are cooled completely you can put the icing on. You can either drizzle in lines over top, or use an offset spatula to spread it more evenly. Your choice.
Toss sprinkles over top.
Enjoy with a big old strawberry pop tart loving smile.