Prepare your tin. Preheat oven to 180°c.

Sift flour, cocoa, salt, baking powder and soda. Set aside

In a separate bowl whisk bananas with sugar. Add eggs and butter and whisk well then milk and vanilla

Whisk dry ingredients in wet until combined. Spoon into baking dish and bake for 20-25mins or until a toothpick inserted comes out clean. Allow to cool in tin for 10mins before turning out to cool completely