A: Cookies can stay fresh at room temperature in their heat sealed cellophane bags up a week. Cookies may be frozen for up to 3 months or in a deep freeze up to 6 months. It is recommended to keep them in their packaging and in the bakery box or another container to preserve freshness. Allow the cookies to thaw completely before opening to prevent them from drying out or icing to bleed. If cookies have been unpackaged and are left over from an event, you can still freeze them. Place in an airtight container with parchment between layers. Store up to 3 months and allow to thaw completely before opening the container.