Heat a griddle pan until very hot.
Brush the butter all over the mango and then dust lightly with the icing sugar. Place onto the griddle pan and cook for 1-2 minutes on each side, until heated through and lightly charred.
Meanwhile, place the rice, coconut milk and cream into a clean pan over a medium heat.
Stir in the honey and heat gently until warmed through, but not boiling.
To serve, spoon the coconut rice pudding into a warmed wide-rimmed bowl and arrange the griddled mango on top.