Indeed you can! Pot roast is a great to freezer because it can be easily reheated without drying it out. Simply shred the pot roast and let it cool completely. Then place in an airtight container or freezer bag along with a cup or 2 of juices. It lasts up to 3 months so be sure to label it! To reheat simply take the pot roast out of the freezer and let it thaw overnight. Then cook warm it up on the stove, in the slow cooker or even in the microwave.