The recipe I used was from the three-Michelin-star chef Eric Ripert. A few years ago, Ripert did a series of videos to show how one can use a toaster oven to make meals for the family. One of them was Caramelized Mango with Rum.
The recipe is quite simple. Prepare the roasting tray by covering it with aluminum foil and brushing it with soft butter. Peel the mango and slice the ends off. Dice the end pieces of mango. Cut the rest of the mango into slices, place them on the tray, and brush with more soft butter. Dust the mango with some brown sugar and place the tray under the broiler in the toaster oven for 5 minutes. Drizzle the mangos with some rum and top with diced fresh mango. Plate and serve with a scoop of vanilla ice cream.