Got the recipe from here, and I made a little modification in quantity.
150g rice flour
200ml thick coconut milk
500ml light coconut milk (or you may dissolve thick coconut milk with some water)
120g granulated sugar
1 pandan leaf
1 tsp vanilla essence
1/2 tsp salt
3 banana, cut into 6 each
banana leaves for wrapping
Dissolve rice flour in thick coconut milk. Boil the light coconut milk+sugar+pandan leaf+salt and stir occasionally. When boiling, turn down the heat and add the vanilla essence. Pour the rice flour mixture little by little into it and stir instantly until thicken and smooth. Remove from the stove.
Place one Tbsp of the dough on a piece of banana leaf. Then add banana and top it up with another spoon of dough. Wrap it and steam it for 30min. Enjoy it with your afternoon tea.