Is it cake? Is it a cookie? Is it a cake sandwich? It’s like an inside-out layered cake sandwich. Aka – Cake Cookie Sandwiches. How fun?! The first time I ever had a cake cookie was when Fatima and Eileen whipped up a batch a while back. Since then, I think we only made them once or twice. Fatima made a cake for one of her coworkers a few weeks…