Whisk the gluten-free flour, sugar, and salt together in a large mixing bowl. Make sure the bowl is large enough that you can place your hands or a pastry cutter into it as you make the dough.
Work the butter into the flour. To do this, use your fingertips or a pastry cutter, Mix until the pieces of butter are somewhere between a pea and an almond.
Drizzle ½ cup cold water over the mixture. Mix, either with your hands or a wooden spoon, until the dough comes together. Test the dough by giving it a squeeze. If it holds together, move to the next step. If not, add additional cold water, one tablespoon at a time, until it holds together.
Combine the gluten-free flour and salt in the bowl of a food processor. Pulse three or four times to combine.
Add the butter or shortening. Pulse the food processor in 3-second bursts until the pieces of butter are between the size of peas and almonds. This takes about 10 to 15 pulses.
Transfer the mixture to a mixing bowl. Squeeze a handful. If it holds together, mix with a wooden spoon until a dough forms. If the handful falls apart, stir in an additional tablespoon of water until the dough forms.
Notes
For detailed information on each step, see the full blog post that accompanies this recipe.
The recipe was tested with Bob’s Red Mill and Cup4Cup Flour. Other gluten-free flour blends might not work as well.
Use a blend of half butter and half shortening for a flavorful and flaky gluten-free crust.
Be sure to use very cold water.