Keze Kuchen (German Cheese Cake)

I am looking for a recipe for Keze Kuchen it is a German cake which translates into (Cheese Cake). I tasted it a few years ago at a friend’s house & I remember it had custard & that it is made in two different stages. However, I am lost on the proportions of the ingredients & am not quite sure if it has cream cheese, full cream or fresh yogurt! Can anybody help me on this? Please. :roll: