Here's what I know...these are the BEST cookies I have ever made, eaten, and subsequently dreamt about. I saw them first posted on Cup of Jo awhile back, so you may have already experienced them. If you haven't, do yourself, your friends, your family, and co-workers a favor and carve out some time to bake these. I shared them with everyone aforementioned, because honestly I did not want to be left alone with these cookies, and everyone became my best friend. That is the magic of these cookies.