Preheat oven to 180°C. Add parchment paper to a loaf tin and set aside.
Add flour, baking powder, baking soda, cinnamon and salt to a large bowl.
Mash the banana in a separate bowl with a fork then add egg, brown sugar and oil. Mix until well combined.
Add the wet mixture to the dry ingredients and stir with a spatula until there are no flours lumps remaining.
Pour into a loaf tin and top with any extra banana and bake for 40-45 minutes until the top is golden and a skewer inserted in the centre comes out with a few crumbs. Cool then slice and serve with butter and honey.