Place butter in freezer for 30 minutes before using.
Mix together flour, salt, sugar, and cinnamon then grate in all of your butter.
Mix with your hands until chunky then add ice water.
Mix and knead lightly just until the dough comes together as one. Make sure not to overwork the dough, otherwise it will not be flakey.
Cover dough with plastic wrap then place in fridge for 30 minutes.
Roll out the dough in between two pieces of parchment paper until thin about ½ a cm thick.
Cut into 2.5 by 5 inch sheets or you can use a mcdonalds apple pie box as reference. This portion should be able to cut 6 sheets = 3 pies
Place 1½ - 2 tbsp of the chilled filling in the middle of the dough sheet.
Lightly brush eggwash around all for sides then place the top dough sheet on top and pinch all 4 sides to seal.
Brush the top of the pies completely with egg wash then cut 4 slits at the top.
Top with cinnamon sugar and bake at 415F for 20 minutes.