Absolutely! Roasted red peppers do very well in the freezer! To do so----place cooled roasted pepper halves in a freezer-safe ziplock bag (you can also separate them in smaller batches for greater ease) and remove as much air as possible and seal. Set them in the freezer and they last up to 1 year. NOTE: I like to label my bags with the date that I freeze them to easily keep track of their freshness.