Layer cakes

Its German chocolate cake time here.
I was going to use Original german sweet chocolate recipe . I couldnt find non-non-fat plain buttermilk in safeway. I had to go with a recipe that would allow yogurt. This recipe after the good experience with chocolate cake from it, had me at my tails end. I was overwhelmed with the proportions. Mixing it was more than a handful.
I made a sheet cake instead of a round cake. I have heard of it but didnt believe it that it is made in cookie sheets. I enjoyed reading baking book which had loads of pictures of creative baking techniques.