This mango upside-down cake recipe is a unique twist on a classic dessert. With the help of a food processor, you can easily make the cake batter by blending together flour, sugar, baking powder, and salt. Then, add in the mango puree, eggs, and oil until well combined. Pour the batter over a layer of sliced mangoes and bake in the oven. Once done, flip the cake over onto a serving plate to reveal the beautiful mango topping. Serve warm with a dollop of whipped cream for a delicious treat.