Place the egg, bananas, milk, vanilla extract, flour, baking powder and sugar in a blender or food processor. Whiz to make a smooth batter with a creamy, pourable consistency (if it is too thick add a little extra milk). Set aside for 10 minutes.
Heat the oil in a heavy saucepan or deep fat fryer and carefully fry spoonfuls of the mixture for 3-4 minutes until golden. Remove with a slotted spoon and drain on kitchen towel.
Serve with grilled pineapple, chilli syrup and deep fried basil leaves.