1. Mash all 4 bananas in a small bowl using a fork, then transfer to a larger cooking bowl.
Slowly mix the soy and wholemeal flour into the bananas causing the mixture to thicken
Mix in the eggs and olive oil to form form a smooth paste.
Add the cashew nuts and raisins and gently mix them in.
Line two baking trays with baking parchment and lightly grease the surface with a little butter. Using two spoons transfer six large scoops of the mixture onto each baking tray. Cook for 15 minutes in an oven preheated to 190°C/380°F/Gas Mark 5.