Preheat the oven to 180⁰C, Gas Mark 4.
Grease and base line a 1kg loaf tin.
Whisk the butter and sugar together until pale and fluffy.
Gradually whisk in the egg.
Mix the flour and baking powder together and fold into the butter mixture.
Stir in the bananas and honey.
Spoon into the prepared tin and bake for 40-45 minutes or until firm to the touch and a skewer comes out clean.
Allow to cool slightly before removing from the tin.