Preheat your oven to 350°F (175°C).
In a mixing bowl, mash the ripe bananas until smooth.
Stir in the melted butter until well combined.
Add baking soda and salt, mixing thoroughly.
Mix in the sugar, beaten egg, and vanilla extract.
Gradually fold in the flour until just combined.
Pour the batter into a greased 4x8 inch loaf pan.
Bake for 60 minutes, or until a toothpick inserted in the center comes out clean.
Allow the bread to cool in the pan for 10 minutes before transferring to a wire rack.