Preheat oven to 350F. Line loaf pan with parchment paper and set aside.
In a small bowl whisk together flour, baking soda, and salt then set aside.
In a mixing bowl, mash the bananas with a fork until smooth. Stir in melted butter.
Stir in sugar, once it is combined add in the egg and vanilla.
Add in the flour mixture, mix until combined.
Pour the batter into the prepared loaf pan. Bake for 50 minutes or until tester inserted into the center comes out clean.
Remove from the oven and let cool completely before removing the banana bread from the pan.
