Libbie loves cookie cake. She requests a cookie cake every year for her birthday. I do not like to buy store-bought birthday cakes. Therefore, I have been working in my test kitchen to create the perfect recipe for Libbie's cookie cake. She absolutely LOVED this one I made... What you will need: 1/2 cup of unsalted butter, soft 1/4 cup of butter (regular salted kind)soft 3/4 cup of brown sugar 1/4 cup of granulated sugar 1 large egg 2 tsp of pure vanilla extract 2 cups unbleached all purpose floour 2 tsp cornstarch 1 tsp baking soda 1/4 tsp salt 3/4 cup semi sweet chocolate chips