This video shows how to make pie dough in the food processor. The trick is to pulse just until the dough becomes crumbly, then to use a tea towel to shape the dough into a round - this ensures the dough will not be over-mixed during the mixing process. If you don't have a food processor, simply use a fork or a pastry cutter.
This is the dough recipe I use for all of my pies, tarts, galettes, etc. It yields a flaky, buttery, golden crust every time.
Find the full recipe here: alexandracooks.com/2018/11/13...