* Freezing instructions. Scoop any leftover dough onto a baking sheet 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 you want to bake, there’s no need to thaw the dough—just bake the cookies as normal (though they might need an extra minute or two in the oven).