Preheat your oven to 350°F (175°C) and grease a 9x5 inch loaf pan.

In a mixing bowl, mash the ripe bananas until smooth with some small chunks.

Stir in the melted butter, baking soda, and salt into the mashed bananas.

In a separate bowl, whisk together the flour and sugar.

Combine the dry ingredients with the banana mixture, then add the beaten egg and vanilla extract. Stir until just combined.

Fold in the chopped walnuts gently.

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

Bake for 60-65 minutes, or until a toothpick inserted into the center comes out clean.

Let the bread cool in the pan for 10 minutes before transferring to a wire rack.

For the frosting, beat together cream cheese and butter until smooth, then add powdered sugar and vanilla extract. Mix in milk as needed for consistency.

Once the banana bread is completely cool, frost it with the cream cheese frosting.