Question: do you have to refrigerate oatmeal?
Answer: When it comes to cooked oatmeal, it needs to be refrigerated. Before transferring the oatmeal into the fridge, make sure it has cooled down a bit. You don't want to put a piping hot oatmeal into the refrigerator. ... Leaving the oatmeal to cool down for longer than 2 hours is not a good idea either.