Yes, you can freeze these bars. Once the bars have cooled completely, cut them into squares and place them in an airtight container or freezer bag. Separate each layer of bars with a sheet of wax paper or parchment paper to prevent them from sticking together. When ready to eat, let them thaw to room temperature for at least 30 minutes before eating (you may still need to pop in the microwave for a few seconds- these bars taste best warm!)