*Freezing instructions. Scoop any leftover dough onto a baking sheet, roll them in sanding sugar, and pop the tray in the freezer for an hour. Once firm to the touch, transfer the dough balls to a plastic bag and keep in the freezer for 3-6 months. When ready to serve, bake the cookies as normal—there is no need to thaw the dough, though they might need an extra minute or two in the oven.