Preheat the oven to 350°F and make sure your rack is in the center of the oven.
Using a mixer, mashed together the bananas with the butter until well blended. Next, add the sugar, egg and vanilla. Finally add in the baking soda, salt and flour and mix well. Fold in the chocolate chip.
Mix together the oats, brown sugar, pecans, butter and cinnamon until well blended. Set aside.
Spray a 9 x 5 inch loaf pan with cooking spray or place a piece of parchment paper in the loaf pan. Fill pan with the batter and bake for 40 minutes.
Sprinkle the pecan topping over the banana bread and bake for 25 more minutes or until a toothpick inserted comes out clean. Allow the loaf to cool completely before handling.