Using a box grater, grate 1 cup chilled butter into a small mixing bowl
Place in the freezer while you prep the other ingredients
Scoop and measure 2 cups + ¼ cup organic all-purpose flour ½ cup sourdough starter, and 1 tsp salt into a large mixing bowl
Combine using a stand mixer or a large wooden spoon until roughly combined
While mixing, slowly add cold butter to the flour mixture
Once the butter is added to the other ingredients, mix until a very shaggy dough starts to form. If you try to clump the pieces together and they will not hold at all, add a very small amount of cold water and try again. The dough should be crumbly, but will hold it’s shape when pressed together.
Form into a rough disk and place covered in the fridge to ferment for 4 hours - 4 days
After fermenting the dough, the best way to start shaping your sourdough pie crust is to place it between a silicone baking mat and a clean and floured work surface. I like to start by beating the cold crust with my rolling pin to soften it just a little bit before quickly rolling it to my desired shape.
Roll the dough out, continuing to flour and rotate it until it forms a rough circle and the dough is about 1/8 inch thick.
Rest it in the fridge for at least 20 minutes while before baking it (please see the above tips for baking your pie!)
Follow pie recipe instructions for baking. To blind bake, bake at 425 F for 15-20 minutes or until lightly brown and puffy