8 TBSPCold water May need more or less depending on the humidity of your kitchen
For the Filling
2Cosmic Crisp Washington State ApplesCored and sliced
2TBSPfreshly squeezed lemon juice
For the Topping
1large egg, beaten
1 TBSPcoarse sugar
For the Dough
Put cubed butter into freezer for at least 15min.
Combine flour, salt, sugar into a large bowl
Add frozen butter into flour mixture. Use your hands or a stand mixer to combine butter into flour mixture. Note that you won't be able to fully incorporate it since it is frozen, but that is the perfect way to get flakey dough.
Add apple cider vinegar (or regular vinegar), mix to combine.
Add cold water one tablespoon at a time until a dough ball forms together. Depending on the temperature and humidity of your kitchen, you may need more or less water to get the dough ball to form.
Wrap dough ball in plastic wrap and put into refrigerator for at least one hour.
For the Filling
Slice Cosmic Crisp Apples into thin slices and put into large bowl
Add cinnamon, sugar and lemon juice into the bowl with apples and toss to coat all the slices. Set aside
Putting It All Together
Preheat oven to 400 F
On a lightly floured surface, roll the dough out into a rectangular shape, about 1/4 inch thick
Pour apple mixture into the middle of the rolled out dough
Fold edges over, over lapping the previous fold with each new fold. It doesn't have to look pretty so don't worry if it is not even.
Brush dough with egg wash and sprinkle with some coarse sugar.
Bake for about 35-40 minutes, until the crust is golden brown