I never have. I don't reheat it or any macaroni & cheese. It breaks down and gets greasy and makes my stomach upset. DD too. Good luck. I made a box the other day and ate the leftovers cold. Not fridge cold. Room temperature and it was fine. Neither of us can eat it reheated.I had my delicious salad for lunch yesterday, and for dinner wanted some comfort food, so made Kraft Dinner. Normally, I would end up having some for a 2nd meal, then throwing out the rest, however, in these days of trying to make food last as long as possible, I carefully measured out 3 servings, and will have one today, and freeze the third one. Anyone ever freeze Kraft Dinner? Just wondering if I'm wasting my time.