I started out using my oven on a very low temperature. I only leave the cookies in the oven for about 25 minutes so they are touch dry but not dry enough to package. If I leave them in too long or let the temperature get too high I experience butter seepage. I have a dehydrator but I have left cookies in there for an hour and come back to find the butter has seeped, even on the lowest temperature so I am a bit cautious now!