The cookie dough for these Italian Lemon Cookies can be prepared up to 2-3 days in advance. Simply wrap it tightly in plastic wrap and store it in the refrigerator. Allow the dough to come to near room temperature for about 15-20 minutes before scooping and baking. After baking and the frosting is set, you can keep the cookies in an airtight container for 3-4 days, or in the freezer for up to a month. Tip: Adding a piece of bread to the container at room temp can help keep them soft.