Pulse all dry ingredients in a food processor until well combined.
9 ounce flour, 1 1/2 tablespoon sugar, 1/2 teaspoon salt
Add shortening, pulse until well combined, all of the dry ingredients should be coated in shortening and the mixture will look sandy.
2 ounce shortening
Add butter, pulse until the largest pieces of butter are about the size of large peas.
4 ounce butter
Transfer to a separate bowl, add the vanilla and 1oz of the water. Stir quickly and gently with a fork to form a shaggy dough. If the dough does not start to clump together, add water one tablespoon at a time until it does.
1-3 ounce water, 1 teaspoon vanilla extract
Dump out on a silpat and bring together with a bench scraper.
Using the heels of your hands smear 1/3 the dough away. Use the bench scraper to fold the dough back on top of itself. Give the dough 1/4 turn and repeat the process 3 more times. (the butter should remain visible in the dough, not getting fully incorporated).
Form the dough into a disk, wrap it in plastic and chill for at least a couple hours before using (1-2 days would be better)
Notes
For a standard depth pie, you could adjust the flour to 6 ounces, the total fat to 4 ounces and the water to 2 ounce. Or (and this is my preference) you can use the recipe as is and turn the left over dough into pie crust chips
cut into fun shapes, brush with egg wash and sprinkle liberally with cinnamon sugar
bake at 375° until golden brown (~12-15 minutes or so depending on the thickness of the dough and the size of the shapes)
For variations in flavor, try replacing 1/5-1/4 of the flour with finely ground cookies (such as ginger snaps or chocolate wafers), add up to a teaspoon of spices (such as cinnamon, ginger or pumpkin pie spice), and/or replace some or all of the water with an alternative liquid (such as apple juice), also ice cold. The following are the variations I use for some of our favorite pies
Apple Pie
Swap 2 oz of flour for finely ground spice cookies (ginger snaps, ginger thins, Biscoff, etc.)
Add 1 tsp cinnamon
Swap the water for apple cider or juice (ice cold)
Pumpkin Pie
Swap 2 oz of flour for finely ground spice cookies (ginger snaps, ginger thins, Biscoff, etc.)
Add 1 tsp pumpkin pie spice
Swap the water for pumpkin juice (ice cold)
Tollhouse Brownie Pecan Pie
Swap 1.5 oz of flour for finely ground chocolate cookies (chocolate wafers, Oreos without cream, etc)
Swap 1 oz of flour for finely ground toasted pecans