Store pumpkin bars in the refrigerator just like pumpkin pie in an airtight container.Serve cold or at room temperature. If you’re done serving, put them back in the fridge until you’re ready to enjoy them again.Cut into smaller pieces as these are fairly rich and most people will be satisfied with a smaller bar.Freeze individually. These pumpkin bars freeze great. Cut into squares, wrap individually in plastic wrap, then store all of the individual bars in an airtight freezer safe container. Freeze for up to a month. Take the bars out individually when you’re ready to enjoy and allow to thaw.