As far as I can tell, the center of the cake has become a worm hole and is sucking everything in.
A friend described a recipe to me the other day and I tried my own spin on it.
My daughter calls them triple-layer brownies.
First, take your favorite chocolate chip cookie recipe and spread in the bottom of a greased 9X13 pan. On top of that put a layer of oreos cookies. I spread the cookies out so that they’re not touching. Then, take your favorite brownie recipe (one that will fill a 9X9 or an 8X8 pan) and spread thinly over top, making sure that the cookies are covered. Bake covered for half an hour at 350 degrees. Then continue to bake uncover until top is dry.
This recipe I can make gluten free and dairy free. Believe it or not there are gluten free brands of Oreos.