Bumpy cake was created by Sanders Confectionery, of Detroit, Michigan, in the early 1900s[1] and was known as "The Sanders Devil's Food Buttercream Cake" when it was first introduced.
[3] Sanders Confectionery makes the original trademarked Bumpy Cake, but other companies have attempted to use this trademarked name many times during the cake's 100-year-plus history.
In recipes adapted for the home kitchen it can be made by piping the buttercream frosting in thick half-inch diameter strips, about one inch apart.
The warm fudge frosting is poured over the cake to cover the bumps of buttercream.
[4] The cake is typically baked in an 8-inch-square pan lined with parchment.