This mango upside-down cake is a delicious twist on a classic dessert. The cake is made with a buttery vanilla cake batter, and then topped with fresh mango slices that have been caramelized in brown sugar and butter. The cake is then baked until it's golden brown and the mango slices are tender and juicy. The result is a sweet and fruity cake that's perfect for any occasion. Serve it warm with a scoop of vanilla ice cream for an extra special treat.