Add flour, cold butter, sugar, and salt to the bowl of a food processor. Pulse until the mixture resembles crumbles the size of a pea.
Turn food processor on and drizzle in ice-cold water until the dough mixture just starts to hold together and looks wet all the way to the bottom (the amount of water will vary based on your flour and room conditions). I used just under a cup of cold water.
Turn dough out onto a well-floured surface and give it a quick knead until a solid ball of dough is formed.
Divide dough into four equal portions and chill for 20 minutes.
When ready to bake, roll the dough out to about 1/4 inch and, using the ring of a mason jar (or biscuit cutter), cut out small circles of pie crust.
Place them onto a cookie sheet lined with a Silpat mat and bake at 375° F for about 5 minutes (or until barely golden brown).