This Nutella banana bread is incredibly tender with bags of chocolate hazelnut flavour. And the marbled effect ensures it looks as beautiful as it tastes.
Put the margarine and sugar in a large bowl and whisk together.
Add the eggs and mashed banana and beat again.
Fold in the flour and baking powder.
Divide the batter equally between two bowls, then transfer a large spoonful to one bowl.
Add the Nutella and cocoa to the smaller batch and whisk through.
Grease the loaf tin and line with baking paper.
Spoon in the mixtures in alternating dollops.
Swirl gently with a skewer.
Bake for 1 hour until golden brown on top and fully cooked through. You can check this by pushing a skewer into the centre of the loaf. If it comes out clean, the cake is ready.
When completely cooled, slice your loaf like bread and enjoy!