Bring butter to room temperature.
Place flour, butter, and salt in a sturdy bowl. Begin to smash and cut the butter into the flour with a pastry cutter. Do this for 3-5 minutes until all of the butter has incorporated into the flour and the texture resembles cornmeal.
Add 4-6 Tbsp. of cold water (one at a time) and 2 tsp. vinegar to the flour/butter mixture. After each addition of liquid, form the mixture into a ball. It will be crumbly at first, but should stick together after all liquid has been added. (Add a few more Tbsp. of water if dough is just too crumbly).
Split the ball of pie dough into two portions and flatten each of them slightly to form two dough patties.
Wrap each portion of dough with plastic wrap and refrigerate for 15 minutes.
Retrieve dough from fridge and remove plastic wrap.
Place dough on a clean and even surface and sprinkle surface, pie dough, and rolling pin with flour.
Begin to roll out dough lightly. As it flattens, press down harder with rolling pin. Check to make sure bottom is not sticking to surface.
Once desired thickness is reached, carefully remove the pie crust and place onto pie pan or baking sheet.
Remove excess dough and crimp edges if desired.