Question

Do you have to keep peanut butter refrigerated?

Answer 1

Refrigerating an opened jar of peanut helps to keep it fresher longer but peanut butter does not require refrigerating to keep it good to eat.

I've really never refrigerated peanut butter and keep it out on the counter and I usually eat it up within the same month but an opened jar of peanut butter will remain good to eat for 3 months or longer at room temperature.

So if you want to refrigerate peanut butter to keep it fresher you can but it's not required to keep it safe to eat.