Pre-heat oven: 190°C / 170°C (fan) / Gas Mark 5 / 375°F
Peel the large bananas and mash them with a fork in a mixing bowl until no large lumps remain.
Mix in the oil and brown sugar, stirring until combined.
Sift the flour into the mix, adding the baking powder and cinnamon and folding these in well.
Then add the dried nuts and stir until just spread throughout, without over mixing.
Bake in a greased, lined 2lb loaf tin for 35-40 minutes until a skewer comes out clean. Check and cover with foil for the remaining time if the loaf is browning after 25mins, and again after a further 5mins if not.
Allow to cool a little in the tin before removing and slicing.