How should I store RX Nut Butter? Our nut butter should be stored in a cool, dry place. Pouches and jars do not need to be refrigerated, even when opened. Buy nut butters here Related articles What is the shelf life of RXBARs? What is the shelf life of RX Nut Butter? Can you freeze RXBARs? Can I eat RXBAR products past their best by date? How do I use RX Nut Butter?