Preheat the oven at 350°F.
Peel the bananas and mash to desired consistency.
Melt butter in the microwave.
Mix butter with mashed bananas.
Add the sugar and incorporate.
Repeat for the buttermilk and vanilla essence.
Set aside.
In a separate bowl, combine the dry ingredients (flour, baking powder, baking soda, cinnamon powder).
Add half of the dry ingredients to the wet ingredients and combine.
Add the remaining dry ingredients and mix fully.
Pour the runny batter into a prepared loaf pan.
Bake for 50 to 60 minutes or until a skewer comes out clean.
Remove from loaf pan to cool.