My sister called me yesterday and told me that she made some brownies in the med bar pan. She said that she went according to the directions, but her brownies were hard as hocky pucks and she couldn't even get a knife through them. She said that the only thing she did that she wasn't sure of was put oil on the stone since that is what the box told her to do. I wasn't sure what to tell her. It is a fact that she is culinary challanged, so I don't know what to tell her. I probably know the answer, but for the life of me my brain won't work to figure this one out.