We figure we can't repeat too often our formula for the flakiest, most tender pie crust — so here it is. The following formula is perfect for a single-crust, 8" to 10" pie.
In a medium bowl, whisk together the flour and salt.
Add the shortening, working it in until the mixture is evenly crumbly.
Add the butter to the flour mixture, and work it in roughly with your fingers, a pastry cutter, or a mixer. Don't be too thorough; the mixture should be very uneven, with big chunks of butter in among the smaller ones.
Add 2 tablespoons of water, and toss to combine.
Toss with enough additional water to make a chunky mixture. It should barely hold together when you squeeze a handful, though the remainder may look quite dry.
Shape the dough into a disk about 1" thick, and refrigerate it for 30 minutes or longer; this resting period allows the flour to absorb the water, making the dough easier to roll out. If you decide to let the dough chill longer than 30 minutes allow it rest at room temperature for 10 to 15 minutes before rolling, to allow the butter to soften up a bit.
When you're "ready to roll," remove the dough from the fridge. Roll the dough to the size needed (about 12" for a 9" pie). Place it in a pie pan, and refrigerate it while you prepare your filling.
Fill and bake your pie as directed in the recipe.
Want to make these gluten-free? For great results, substitute King Arthur Gluten-Free Measure for Measure Flour for the all-purpose flour in this recipe. Be sure to bake thoroughly; gluten-free baked goods often need a bit more time in the oven.
You may want to bake the crust prior to filling; this is typically done when the filling itself doesn't need to be baked (e.g., lemon meringue, chocolate cream). For details, see our blog post, Prebaking pie crust.
