Upside-down cake is a type of cake that is baked with its toppings on the bottom of the pan. Traditionally, it features fruits like pineapple or apples, which are arranged in a layer of sugar and butter before the cake batter is poured on top. Once baked, the cake is flipped over, revealing the caramelized fruit on top. This dessert is known for its moist texture and sweet, fruity flavor. The caramelization process adds a rich taste, making it a popular choice for gatherings and celebrations. Upside-down cake can be made with various fruits and is often served warm or at room temperature.