How long does it take to bake frozen mac and cheese? You can reheat the dish easily and quickly in this way, but you need to be careful not to overheat it. In addition, Stouffers has a FAQ that states We do not recommend using a toaster oven due to the toaster ovens small size and close proximity of the heating element to the meal container.. No preservatives. Can you put stouffers mac and cheese in a crockpot? [CDATA[/* >