Ann Readron of How to Cook That has an excellent Youtube channel full of great baking tutorials. A couple months ago she created this intricate cake in honor of Instagram.
The cake includes colored gelatin, two different kinds of mousse, Jell-O, and of course cake. It's impressive how much the cake actually looks like the app itself!
Bonus points if you take a photo of this cake and post it on Instagram.
Visit Ann Reardon's Youtube Channel → How to Cook That
(Video: How to Cook That)