Preheat the oven to 350°F (175°C). Grease a 9×5 inch loaf pan with butter or non-stick spray.
In a large mixing bowl, combine the mashed bananas and melted butter. Stir until well blended.
Add the sugar, eggs, and vanilla extract to the banana mixture. Mix until smooth.
In a separate bowl, whisk together the flour, baking soda, and salt.
Gradually add the dry ingredients to the wet ingredients, stirring just until combined. Do not overmix.
Pour the batter into the prepared loaf pan and smooth the top with a spatula.
Bake in the preheated oven for 60 minutes, or until a toothpick inserted into the center comes out clean.
Remove the banana bread from the oven and let it cool in the pan for 10 minutes.
Transfer the bread to a wire rack to cool completely before slicing.
For plating, slice the banana bread into even pieces and serve on a clean plate. Optionally, garnish with a light dusting of powdered sugar or a small slice of fresh banana on the side.