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Method
step 1
Cream together the butter and sugar until light and fluffy.
step 2
In another bowl mash up 1-2 bananas (we used 1 1/2 ) then fold them into the butter and sugar.
step 3
In a separate mug whisk two eggs together and add to the mixture.
step 4
Fold in the flour and baking powder.
step 5
Melt the butter in a small pan over medium heat and add the cocoa powder.
step 6
Pour the chocolate mixture into a separate bowl with the sugar in and mix well.
step 7
Add another two whisked eggs and mix. Fold in the flour and baking powder.
step 8
Put one spoonful of chocolate mixture into a 20cm deep round tin then a spoonful of banana in next to it. Repeat multiple times until all the mixture is in the tin. You should now have a spotty pattern. Take a metal skewer and draw figure-eights in the mixture. It should now have a marbled look.
step 9
Cook in a gas mark 5 / 170c fan preheated oven for 45 minutes or until golden and a skewer comes out clean.
step 10
When cooled sprinkle with banana chips and / or cocoa powder.