I did a cake mix (devil's food), added a little different version of the cake mix extender from here... I added 1 cup of flour, 1 cup of sugar, 1 cup of sour cream, 2 tsp. vanilla flavoring, dash of salt, one box of instant chocolate pudding and 1/2 cup Hershey's chocolate syrup (you could add up to a cup if you'd like) ... it was delicious!! I made an extra cake of this so I could taste it to make sure it was good .. I used one layer and crumbled up for cake balls.. I used the other layer which I baked in a springform pan and made a giant ding dong from it ... it all got eaten and they were all asking for more!!