Preheat oven to 350 degrees F (175 degrees C). Grease a 9×5 inch loaf pan.
Mash bananas and set aside.
In a large bowl, add muffin mix, eggs, milk and melted butter. Blend well until batter is smooth.
Fold in mashed bananas
Spread evenly into the prepared pan.
Bake at 350 degrees F (175 degrees C) for 55 – 60 minutes, or until a toothpick inserted into the center of the loaf comes out clean. Cool loaf in the pan for about 5 minutes before removing to a wire rack to cool completely.