This is one of variations you can play around with Flourless Chocolate Cake. The cake actually looks handsome when naked, without topping, with cracky crusty look. However, this would give more creamy texture. And , if you happen to misshape the cake during the process, cover it up with whipped creme would be a quick fix.
See how gooey it is inside?
The one is my all time favorite, you can find cake recipe over here. For the whipping cream, you can use Cool Whip or the following.