Discard berries that look bruised or shriveled. No need to freeze berries on a cookie sheet, just place the berries, still in their original plastic pack, in a resealable plastic bag. Or, transfer berries to freezer containers or resealable freezer bags. The berries will freeze individually and you can remove just the portion you need. Remember ... Aug 20, 2013 · Then, allow the berries to dry completely. Place them under a fan, get your hairdryer, or be patient and wait. Whatever your method, the berries need to be completely dry before freezing. 3. Place them in a single layer on a rimmed baking sheet for freezing. How to Store Blueberries. ... How to Freeze Blueberries ... Spread on a baking sheet and place in the freezer until completely frozen. If you prefer to wash them first, try placing the berries individually on cookie sheets covered with wax paper and then place the sheet in the freezer. Once frozen, the berries can be placed in a freezer-safe bag without sticking together. Blueberries make excellent jams, muffins, tarts, cheesecakes, and so much more! Make sure to leave enough space in-between berries so they freeze individually. Wait for a little while to allow the strawberries to completely freeze solid, then take the cookie sheet out of the freezer and tap on the counter to loosen the berries. You are now ready to pop them into quart size freezer bags for more long term freezing.