01 -
In a large bowl, whisk together flour, sugar, cinnamon, and salt. Cut in cold butter with a pastry cutter or your fingers until the mixture resembles coarse crumbs. Add ice water one tablespoon at a time, mixing just until the dough comes together. Divide the dough into two discs, wrap in plastic wrap, and chill for at least 1 hour.
02 -
In a large bowl, toss sliced apples with granulated sugar, brown sugar, cinnamon, nutmeg, flour, lemon juice, and vanilla. Set aside.
03 -
Preheat oven to 400°F (200°C). Roll out one dough disc on a lightly floured surface and fit into a 9-inch pie plate. Fill with the apple mixture, mounding slightly in the center. Roll out the second dough disc and place over the filling. Trim excess dough and crimp the edges to seal. Cut small slits in the top crust to allow steam to escape. Brush with egg wash.
04 -
Bake for 20 minutes at 400°F (200°C), then reduce oven temperature to 350°F (175°C) and bake for an additional 30-35 minutes, until the crust is golden and the filling is bubbling. If the crust is browning too quickly, cover the edges with foil. Let cool for at least 2 hours before slicing.