German chocolate cake, originally German's chocolate cake, is a layered chocolate cake filled and topped with a coconut-pecan frosting. Originating in the United States, it was named after English-American chocolate maker Samuel German, who developed a formulation of dark baking chocolate that came to be used in the cake recipe. Sweet baking chocolate is traditionally used for the cake's flavor, but few recipes call for it today. The filling and/or topping is a custard made with egg yolks and evaporated milk; once the custard is cooked, coconut and pecans are stirred in. Occasionally, a chocolate frosting is spread on the sides of the cake and piped around the circumference of the layers to hold in the filling. Maraschino cherries are occasionally added as a garnish.

A layer cake or sandwich cake is a cake consisting of multiple stacked sheets of cake, held together by frosting or another type of filling, such as jam or other preserves. Most cake recipes can be adapted for layer cakes; butter cakes and sponge cakes are common choices. Frequently, the cake is covered with icing, but sometimes, the sides are left undecorated, so that the filling and the number of layers are visible.