Place flour, sugar, and salt in the food processor and blitz a few times.
2½ cup All-purpose flour, 2 tablespoon Sugar, 1 teaspoon Salt
Cube the butter and add to the flour mixture, and pulse 10 times until all the butter is broken.
1 cup Butter
The mixture will be crumbly and coarse. Add 2 tablespoons of ice water to bond the mixture together. Pinch a small amount of the dough between your fingertips, and if the dough still is not sticking together add more water, one tablespoon at a time.
5 tablespoon Water
Dump the dough onto the floured counter. Press the dough together to form a large disk. Do not knead the dough. This will cause the butter to melt.
Divide the dough into two discs and wrap them in cling wrap and chill for a couple of hours.
Preheat the oven to 400°F
Roll each piece of the dough out to ¼ inch. Place one of the dough sheets on the pie pan. Trim the edges and leave about one inch extra from the edge.
Poke the bottom of the crust. with a fork. Fill the pie with the filling. Place the second dough on top and trim the edges, and place the top and the bottom crust together.
Crimple the edges with one knuckle inside and two fingers outside. Poke the top with a fork, and brush the top with a mix of egg and milk. Sprinkle the top with coarse sugar and bake for 40-45 minutes
1 Egg, 2 tablespoon Milk, 1 tablespoon Coarse sugar