This fruit dessert has a caramelized topping like that of classic creme brulee -- no kitchen torch required.
Heat broiler to high with rack 6 inches from heat source. Scatter 1 tablespoon sugar evenly over cut side of each mango half. Immediately broil on a foil-lined rimmed baking sheet until mangoes are softened and sugar is hardened and golden brown, 5 to 7 minutes. Serve warm with lime wedges.
Turbinado sugar (a.k.a. raw sugar) creates a crunchy crust and has a deep flavor, but regular granulated sugar can be substituted in a pinch. To get two even halves from one mango, slice the fruit lengthwise along each side of the pit.