The shelf life of Otis Spunkmeyer cookies can vary depending on the specific type of cookie and how they are stored. Generally, packaged Otis Spunkmeyer cookies have a shelf life of about six to twelve months when kept in an unopened package in a cool, dry place. Once opened, it is recommended to consume the cookies within a week or two for optimal freshness and taste. For cookies that are frozen, they can maintain their quality for up to twelve months as long as they are stored in an airtight container. To prolong freshness, it is best to keep cookies away from heat and moisture. For the most accurate information regarding specific products or storage guidelines, it is advisable to check the packaging or visit the official Otis Spunkmeyer website for more details.