Place all the ingredients, except the oil and sugar into a blender and blitz until batter is smooth.
Place a kuih bahulu mould on a stove over low heat, then lightly grease with oil.
Pour the batter into the mould, filling it until it is about ¾ full.
Cover the mould with the lid and cook for about 3 minutes.
Lift the lid and sprinkle some sugar into the centre of each kuih. Cover the mould again and continue cooking for another 3 minutes. Remove the kuih from the mould.