Cakeious's Pastry World is the Realm of the Titan of All Things Pastry, Cakeious.
The realm itself
Overall, the Realm is a giant hollow cake, with several cakes around it. The cake is a pink cake with white frosting on the edges, and seems to be resting on some kind of giant plate. The sides have no icing.
Cakeious's Titan Portal is unlike any other, as it is a pile of donuts, rather than an actual portal.