This apple cinnamon upside-down cake is a unique and delicious twist on traditional cakes. The cake is baked with sliced apples and a cinnamon sugar mixture on the bottom, which creates a beautiful and flavorful topping when the cake is flipped over. The cake itself is moist and tender, with a warm cinnamon flavor that pairs perfectly with the sweet apples. This cake is sure to impress your guests and leave them wanting more.