I made this following the directions on Vain Vanilla's recipe card. I didn't look up what a 12-ounce mug was before using the bigger and widest one I have for this; I should use a normal mug next time. The bulk in the center is where the cream cheese is at. The cake had a hot cocoa (which was one of the ingredients used) smell to it after it was fresh from the microwave. But I don't think it tasted like the drink. The cake was mostly alright, but there was a couple bits of unbaked batter at the bottom.
Anyway, the recipe for this was:
Whisk the above together in a mug.
Stir the above into the mug.
In a small bowl, mix these two together until they're smooth and then drop down into the mug. Make sure they're covered by the batter. Then put the mug into the microwave and bake on high for about 90 seconds.