To make the crust, whisk flour, sugar, and salt together in a medium bowl. Using your fingers, cut the butter into the mixture until lit resembles small crumbs. Add the water and stir until it all comes together. If your dough is too dry, add 1 tablespoon of water. Knead the dough on a lightly floured surface until you can shape a ball. Then flatten it into a disk. Wrap in plastic wrap and place in the refrigerator for at least one hour.

Prepare the filling by mixing the apples, brown sugar, flour, lemon juice, and cinnamon together in a large bowl. Cover and let sit in the refrigerator until the dough is ready.

Preheat oven to 425°F and line a baking sheet. On a lightly floured surface, roll the dough into a large circle and transfer to prepared baking sheet.

Place the apples into the center of the dough then gently fold the edges of the dough over the apples. Press gently to seal. Bake for about 35 minutes, until the crust is golden brown. Let stand for 10 minutes before serving.