In the work bowl of a food processor, place flour, sugar, and salt; pulse to combine. Add butter and pulse until mixture is crumbly. Add ice water, 1 tablespoon at a time, just until dough comes together.
Form dough into a disk, and wrap tightly in plastic wrap; refrigerate for at least 2 hours.
Recipe by Victoria at https://victoriamag.com/apple-dumplings/