Preheat the oven to 350 F.
Prep a loaf pan with non stick spray or butter.
In a large bowl, mash the bananas.
Mix in the melted butter, egg, and vanilla extract.
Once combined, start adding in your dry ingredients.
Pour into your prepared loaf pan and bake for 45 - 50 minutes.
Remove the oven, and let cool for 5 minutes before transferring to a wire rack.
Let the bread cool completely before cutting into.
Serve & enjoy!