Preheat the oven to 350°F. Grease a 9x5 inch loaf pan and set aside.

In a large bowl, mash the bananas with a fork or pastry blender until smooth.

Add melted butter, eggs, yogurt, and vanilla to the mashed bananas and mix until well combined.

In a separate bowl, whisk together flour, sugar, baking powder, baking soda, and salt.

Gradually add dry ingredients into the wet ingredients, mixing gently until just combined.

Pour the batter into the prepared loaf pan.

Bake for 55 minutes or until a toothpick inserted into the center comes out clean.

Let the banana bread cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.