Preheat the oven to 180c/160c Fan/Gas Mark 4.
Line a bread loaf tin with grease proof paper and Spritz with a little low carlorie cooking spray to avoid sticking.
Into a large bowl weigh the flour and then add baking powder and Cinnamon. Mix together with a wooden spoon. Place to one side.
In another bowl add your peeled bananas (these need to be very very ripe i.e very dark Brown/black otherwise the recipe simply will not work). Use a potato masher or fork to mash them until they are completely purified.
Add egg, vanilla essence, melted butter and yogurt to the egg mixture. Beat for 1 minute.
Add the sticky banana mixture to the flour mixture and beat for 2 to 3 minutes until full combined.
Add the mixture to your lined/greased baking tin ensuring the mixture is even all over.
Place into the oven for 45 – 55 minutes. Slide a knife or skewer into the middle of the bread to check if it is cooked. If there is no residue it will be finished.