A chocolate chip cookie cake is a classic and crowd-pleasing option for a kids' birthday party. To make this cake, prepare a large batch of chocolate chip cookie dough and press it into a round cake pan. Bake until golden brown and let it cool completely. Decorate the cookie cake with a layer of chocolate frosting and top with colorful sprinkles. This cake is perfect for kids who love cookies and chocolate, and it's easy to customize with additional toppings like whipped cream or ice cream.