Gaaaaaaaaaah! Another Portal cake reference! Kill it with fire!
Kidding! I can't stay mad at Jimmy and Ashley. They pull off such magical feats week after week, concocting delicious delicacies that tantalize my taste buds. Besides, are you really going to say no to chocolate cake? Really? REALLY!?
In any case, Portal actually gives you the cake recipe in-game. I call that a challenge, and Feast of Fiction has met that challenge. So suck it.