A co-worker and I were talking about baking today. He told me that his grandmother made chocolate chip cookies in an unusual way. She didn't follow a recipe (although she claimed the recipe was based on the one of the packet of chocolate chips she used), building the cookie by feel. When baked, the top of the cookie separated from the bottom creating a pocket that was filled with a skein of crystalized brown sugar. This sounds to wonderful to be believed. His grandmother passed away some time ago and no one ever got her method.
I know I'm going out on a limb here, but does anyone know of a recipe or a cooking method that would create such wonder?