While I don't have the half time oven (or a Monty yet for that matter), I burn the OR popcorn in those mini-bags as well quite easily in a regular micro. I think it tells you not to use the popcorn button for these (I am sure due to their small size and burning issue). You really have to watch/listen close and I find just stopping the micro when it slows down popping, but not wait until it is too slow. It think it is just a guessing game but you will learn what works for the most part. It all will not be popped but it is better that way than burnt!