This apple cinnamon upside-down cake is a unique twist on the classic cake. It's a moist and tender cake with a caramelized apple topping. To make this cake, you'll need all-purpose flour, baking powder, salt, sugar, eggs, vegetable oil, vanilla extract, apples, cinnamon, and brown sugar. Mix the dry ingredients in one bowl and the wet ingredients in another. Combine the two mixtures and fold in the chopped apples. To make the topping, melt butter and brown sugar in a saucepan and pour it into the bottom of a greased baking pan. Arrange the sliced apples on top of the caramel and pour the cake batter over them. Bake the cake for 35-40 minutes or until a toothpick inserted in the center comes out clean. Let the cake cool before flipping it onto a serving plate.
