Store smashed dates in an airtight container in the refrigerator for up to one week., For longer storage, freeze in a single layer on a baking sheet until solid, then transfer to an airtight container or freezer bag; keep frozen up to three months., Thaw frozen dates in the fridge for 15–30 minutes or at room temperature for 5–10 minutes before serving., Microwave thawed dates 6–10 seconds if a warm, gooey center is desired, but watch carefully to avoid overheating., Nut-free options include substituting peanut butter with sunflower seed or soy nut butter., Use firm, fresh dates and avoid excessive wet fillings to prevent sogginess., Crunchy peanut butter can be used for added texture but may spread less easily than smooth peanut butter.