Preheat your oven to 350°F (175°C).
In a large mixing bowl, mash the ripe bananas until smooth.
Stir in the melted butter into the mashed bananas.
Mix in the sugar, beaten egg, and vanilla extract.
Sprinkle the baking soda and salt over the mixture, then stir to combine.
Gradually fold in the flour, being careful not to overmix.
Pour the batter into a greased 4x8-inch loaf pan.
Bake for 60-65 minutes, or until a toothpick inserted in the center comes out clean.
Let the bread cool in the pan for about 10 minutes before transferring it to a wire rack.
