put the flour and salt in the bowl of a food processor

cover and pulse to combine

cut the butter in small piece and toss it in the processor

cover and pulse, you want it to look like bread crumbs but you don't want it to run continuously, just pulse, pulse, pulse

when it looks like bread crumbs

add cold water 1 Tablespoon at a time and pulse between additions of water

when the dough JUST starts to hold together it's done

take it out of the processor and put it on the counter, knead it quickly to bring it together to form a dough

wrap in plastic wrap and put it in the fridge to chill

when you're ready to use it divide it in half, roll out each half of the dough and line a pie pan or tart pan with it, press into the tart pan really well so the crust fits the tart pan, trim the excess

at this point you can freeze your tart dough in the pan for 30 minutes as long as its a metal tart pan--glass will break going from the freezer to a hot oven

pre-heat your oven to 390˚ then blind bake or fill and bake as needed

if you're making a one-crust pie or a tart and you're going to blind bake it put parchment in the center of the lined pan, add beans or baking beans and bake for 20 minutes then remove the beans and bake another 5, then fill and bake

For most one-crust pies just filling and baking works if you plan to bake your pie between 375˚-400˚ for around 45 minutes to an hour