A party cake helps round out the party theme. If you are planning either an Egyptian or even a Mayan themed party, making a pyramid cake will fit the bill. Making your own pyramid cake requires little effort and time, if you have some ideas before you begin.
The first option is to carve your cake into the shape of a pyramid. Carved cakes do require some skill, so if you have not carved a cake before, you may want to do a dry run, prior to the party to ensure you can successfully carve the cake. When carving a pyramid, you will need two square shaped sheet cakes stacked on top of one another. From there, you carve the sides of the cake off at a 45 degree angle about 5 cm (2 inches) in from the edge. Then you flip two of the cut off edges over and put them on top of the cake. Cut off the edges and you will have a pyramid shape. The carved cake can then be covered in fondant.
If carving is too difficult for you, you can use a moulded cake pan. These pans are available at baking supply stores. Once your cake is baked inside the pan you can release the cake to have a perfect pyramid. Then you frost the exterior of the cake using frosting. For an added look, place the pyramid on top of a full sheet cake and frost it with a sand coloured frosting. Then sprinkle digestive biscuit crumbs over top to make sand. You can also put plastic palm trees around the pyramid to help simulate the desert.
The first two methods are appropriate for a traditional Egyptian pyramid, similar to the Great Pyramid of Giza. However, if you are looking for a different pyramid cake, similar to those the Ancient Mayans built, you can make your own using sheet cakes. You will need three 20-by-20-cm (8-by-8-inch) sheet cakes. The first cake will be the base. Cut off one inch from each side of the second cake and place it on top of the first. For the third cake, cut off two inches from each side and place it on top of the second cake. Then cut up one of the cake scrapes into a 5-by-5-cm (2-by-2-inch) square and place it on top of the third cake. And then on top of the fourth cake place a 2.5-by-2.5-cm (1-by-1-inch) square cut from left over cake. The finished cake can be frosted or covered in fondant, whichever you prefer.