National Gooey Butter Cake Day is celebrated on August 12th, honoring a dessert that originated in St. Louis, Missouri. This cake is characterized by its flat, dense, and gooey texture, making it a beloved treat often enjoyed as a coffee cake. The cake's creation is said to be accidental, resulting from a mix-up in a bakery's recipe during the Great Depression. Schnucks Markets, a St. Louis-based supermarket retailer, founded the day to celebrate this culinary mishap. To observe the day, people are encouraged to enjoy slices of gooey butter cake, try making their own versions at home, or visit St. Louis to experience the local culture and taste the cake from various bakeries. The day serves as an opportunity to appreciate this delicious dessert and its history.