Mix flour, baking powder, baking soda & salt in a bowl.

Mash banana in a separate bowl.

Whisk egg one at a time & mixing at each stage into the butter & sugar mixture then add flavor.

Then add the banana mixture into the butter & egg mixture mix well then incorporate the dry ingredient & combine.

Add milk & cinnamon into the banana mixture & mix well.

I added little water to loosen mine because it was too thick.

Mix every thing together until every thing is well incorporated, I garnish mine with chocolate chunks & desiccated coconut (optional).

Transfer into a baking pan & bake in a pre-heat oven until tooth pick comes out clean when inserted in the center.