Preheat your oven to 350°F (175°C) and prepare a loaf pan by greasing it or lining it with parchment paper.

In a mixing bowl, beat the softened butter with sugar until light and fluffy, about 3-4 minutes.

Add eggs one at a time, mixing well after each, then mash the bananas and fold into the mixture along with vanilla extract.

Whisk together flour, baking soda, and salt in a separate bowl.

Gradually fold the dry ingredients into the banana mixture until just combined.

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

Bake for 50-60 minutes or until a toothpick comes out clean.

Let cool for 10 minutes, then turn out onto a wire rack to cool completely.