Preheat your oven to 350°F (175°C).

Grease your loaf pan with butter or non-stick spray.

In a mixing bowl, mash the ripe bananas until smooth.

Add the melted butter to the mashed bananas and mix well.

Stir in the beaten egg, sugar, and vanilla extract until combined.

In another bowl, whisk together the flour, baking soda, and salt.

Gently fold the dry ingredients into the wet mixture using a rubber spatula.

Pour the batter into the prepared loaf pan and smooth the top.

Place the pan in the oven and bake for 60 minutes.

Check for doneness by inserting a toothpick into the center; it should come out clean.

Let the banana bread cool in the pan for about 10 minutes before transferring it to a wire rack for complete cooling.