Preheat oven to 175°C.
In a bowl mash bananas. Make sure there are no lumps.
Add oil, brown sugar and vanilla essence. Mix well.
Add sour cream and mix.
Now add flour, cocoa powder, salt and baking soda.
Mix to form a thick batter.
Add the choco chips and mix to combine.
Transfer batter to a greased 7.5" * 4.5" loaf tin and level top.
Bake for 55-65 minutes. A tooth pick inserted would have moist crumbs but should not have wet batter.
Remove from oven and let it sit on wire rack for 10 minutes.
Transfer loaf to wire rack and allow it to cool completely before slicing.
Enjoy with a cup of coffee or tea.
