Prepare baking tin. Sift flour, baking powder, salt and cinnamon. Mix and set aside

In a bowl mash bananas well with a fork. Add sugar, oil, eggs and yogurt. Mix well

Add the flour mixture and mix till just combined.

Divide in half and add the cocoa powder to one bowl. Dollop the white and cocoa batters alternatively into your baking tin and swirl with a butter knife

Bake in preheated oven until ready. Used jiko for about 40mins