Heat the coconut cream, sugar, and cardamom in a small pot over medium-low, stirring occasionally until the sugar melts and the mixture is very hot. Do not boil.
Remove from heat, then stir in the vanilla and lime zest.
Fold in the cooked rice, the cook over medium heat until the mixture is hot and the rice has absorbed most of the liquid.
Season with salt, to taste.
Spoon the rice into a bowl, then top with toasted coconut flakes, mango, lime juice, salt, and black sesame seeds.