Whether you're baking a mountain biking cake for your nine-year-old son or a skiing-themed cake for your brother, certain cake designs require mountains. Using large sections of another party-cake works for a single large mountain, but multiple mountains or a mountain range require more strategy. Artificial structures, like cardboard and tin-foil, make eating the cake awkward and cumbersome. Instead, use appropriately dense cake types for the base of your cake-top mountain range.
Remove the pound cake from its foil and cut a triangle measuring approximately half-an-inch smaller than you envision your final mountain. Pound cake is denser and crumbles less easily than standard party cakes, making it suitable for building mountains of any size.
Spread a single layer of thick frosting on the mountainous portion of the party cake before applying the mountains. The frosting helps the pound-cake mountain stick to the party-cake surface.
Spread a thin layer of frosting on the connecting side of the pound-cake mountain and place it directly onto the recently frosted portion of the party-cake. Connect the two pieces while the frosting is still wet for maximum adhesion.
Drive a toothpick through the top of the pound-cake mountain and beneath the party-cake surface to prevent movement while frosting.
Spread frosting over the pound-cake mountain sides and onto the party-cake surface with a spoon. A spoon's shape rounds the inclines and edges of a pound-cake mountain for a natural-appearing merger between the two cakes.