To roll out the dough: Lightly dust a work surface with flour, and lightly dust a rolling pin, if desired. Roll out the dough to about ¼ inch thick, rotating it as you work to help prevent it from sticking. To transfer the dough to the pan, gently roll it up, wrapping it around the pin, then unfurl it into the pie plate.
To prepare the edge for crimping: On a single crust pie, use scissors to trim away the excess dough, leaving about ½ inch excess all the way around the outside edge of the pie plate. Tuck this excess dough under, pressing gently to make it flush with the edge of the pie plate. On a double crust pie, gently press the top and bottom crust together to flatten the dough slightly, then trim the excess and tuck under as directed for a single crust pie.
To par-bake the dough: Dock the crimped single crust pie dough with a fork and chill well (at least 30 minutes). Cut a square of parchment paper slightly larger than the diameter of a pie plate, and press it into the base of the pie plate. Fill with pie weights to the top inner rim of the pie plate. Bake in a 425°F oven until the edges begin to lightly brown, 15-17 minutes. Remove the parchment paper and pie weights, and return to the oven until the lower portion of the crust appears dry and set, 2-3 minutes more. Cool completely before filling.