Preheat the oven to 180°C.
Peel, cut into slices and mash the bananas.
Add butter, eggs and vanilla extract and stir.
In a separate bowl mix flours, sugar, salt, baking powder and baking soda.
Mix together dry and wet mixes, add the orange peel grated and the cinnamon.
Fill a plumcake mold (lined with baking paper) with the mixture and bake at 180°C for 40 minutes. (Ckeck with a wood skewer or a knife: stick it in the center and if it comes out clean the bread is ready!)