1. In a mixing bowl, combine the flour, sugar, and salt.
2. Cut the cold vegan butter into small cubes and add to the flour mixture. Use a pastry cutter or your hands to mix until the mixture resembles coarse crumbs.
3. Gradually add ice water, one tablespoon at a time, mixing until the dough comes together.
4. Form the dough into a ball, wrap in plastic wrap, and refrigerate for at least 30 minutes before using.