Steps
Preheat your oven to 350°F (175°C) and grease a small loaf pan.
In a mixing bowl, mash the ripe banana until smooth.
Add sugar and softened butter, mixing until well combined.
Beat in the egg and vanilla extract until fluffy.
In a separate bowl, whisk together the flour, baking soda, baking powder, salt, and cinnamon.
Gradually add the dry ingredients to the wet mixture, stirring gently until just combined.
Pour the batter into the prepared loaf pan and smooth the top.
Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean.
Let it cool in the pan for 10 minutes before transferring to a wire rack to cool completely.