Step 1

Preheat oven to 350 degrees. Prepare a 9x5 inch loaf pan with butter and flour, or spray with non stick cooking spray that has flour added.

Step 2

In a large bowl mash the bananas until smooth. Str in the melted butter and sour cream. Stir in the eggs, sugar, and vanilla extract.

Step 3

Stir in the baking soda, salt, and flour until just combined.  Fold in the chocolate chips.

Step 4

Pour batter into the prepared pan.  Bake for 50-60 minutes, until a toothpick inserted in the center comes out clean.