In the work bowl of a food processor, pulse flour, sugar, and salt until combined. Add cold butter, and pulse until mixture is crumbly. With processor running, add 5 tablespoons ice water in a slow, steady stream just until dough comes together. (Mixture may look crumbly. It should be moist and hold together when pinched.)
Turn out dough, and shape into a disk. Wrap tightly in plastic wrap, and refrigerate for at least 30 minutes. Dough may be refrigerated for up to 3 days or frozen for up to 2 months.
Recipe by Taste of the South at https://tasteofthesouthmagazine.com/chicken-pot-pie/