TO STORE: Transfer cowboy stew to an airtight container and store in the refrigerator for up to 3 days.
TO REHEAT: Reheat the stew on the stovetop over medium heat, stirring occasionally, until warmed through. You can also reheat in the microwave.
TO FREEZE: Transfer the stew to a freezer-safe container or freezer bag. Freeze for up to 3 months; thaw overnight in the refrigerator before reheating. (Note that potatoes don’t freeze very well, so they will be a bit mealy afterwards. Since they’re not the main ingredient here, it’s not that noticeable.)