Gooey butter cake is a type of cake traditionally made in St. Louis, Missouri. It is a flat and dense cake made with wheat cake flour, butter, sugar, and eggs, typically near an inch tall, and dusted with powdered sugar. While sweet and rich, it is somewhat firm, and is able to be cut into pieces similarly to a brownie. Gooey butter cake is generally served as a type of coffee cake and not as a formal dessert cake. There are two distinct variants of the cake: the original St. Louis, MO Bakers' gooey butter and a cream cheese and commercial yellow cake mix variant. The original St. Louis, MO Bakers' gooey butter is believed to have originated in the 1930s. It was made with a yeast-raised sweet dough on the bottom.

Cake is a flour confection made from flour, sugar, and other ingredients and is usually baked. In their oldest forms, cakes were modifications of bread, but cakes now cover a wide range of preparations that can be simple or elaborate and which share features with desserts such as pastries, meringues, custards, and pies.