Peel the banana and mash well using spoon in a mixing bowl. Preheat oven to 150° C.

Add wheat flour, cocoa powder, oil, sugar, baking powder to the banana mash and mix well adding water little by little.

When everything is mixed well and the mixture reaches desired consistency add choco chips and mix. Grease the baking pan with oil and pour the mixture into it. Bake for 20 minutes or until the cake is done. Insert tooth pick to check if it is baked well. Mine got done at 17 minutes so keep an eye on the cake after 15 minutes. Let it cool completely on wire rack, invert, cut into slices and serve.