I have these in the oven right now. They smell amazing. They are not cooking through though. I did the 15 minutes at 350 degrees. Then I added 3 more minutes, then 5 more minutes...still not cooked. Now I've lowered it to 300 degrees and I've got it in for 5 more minutes. It seems to have worked this time. These are huge, I can't believe a serving is 2 muffins. That will be so filling.