If stored in an airtight container or mason jar, these Candied Cashews will be good for up to a month. To prolong the shelf life even longer, store them in the fridge. EXTRA TIP: You can freeze Candied Cashews in either a resealable Ziploc bag or a freezer safe container. I like using these. They'll be good in the freezer for up to 3 months. When ready to eat, simply thaw them out at room temperature before eating. I like to lay them out on a sheet pan to thaw to avoid sticking, clumping together or softening up too much. Then, I transfer them to a bowl or jar as needed.