Combine flour, granulated sugar, and Kosher salt in the bowl of a food processor fitted with blade attachment. Pulse to combine. Add cold cubed butter and cold cubed shortening, then pulse until pea-sized pieces form.
Add ice water and pulse. Add an additional tablespoon of water until the dough begins to form. Do not leave the motor running, simply pulse the dough until it holds together completely as one ball with no visible clumps.
Remove the dough and divide into two equal portions. Wrap each tightly in plastic wrap, pressing it down into a round, flat disc. Chill in a fridge or transfer to a freezer to use at a later time.
After chilling, the dough is ready to be rolled out for any pie recipe. Be sure to roll onto a lightly floured surface.
Tip: we like to roll pie dough onto floured plastic wrap placed directly on the counter top!