Put chocolate and peanut butter together in any form and he is in heaven so once I saw this on Bakerella's site, I knew it was perfect for Father's Day. I was intrigued by this recipe because it was based from a boxed mix but knew it would turn out more like from scratch due to the change of ingredients from normal. It was a very simple cake to make and was definitely more dense than a normal boxed cake would be. It is very delicious, but very rich so serve with a large cold glass of milk! The original recipe can be found on this site. The only changes I made was to use two 8" pans instead of 9", baked for 30 minutes and covered the cake with more peanut butter cups than the recipe calls for.