01 - Preheat oven to 350°F. Grease and line a 9 x 5 inch loaf pan with parchment paper.
02 - In a large bowl, whisk mashed bananas, eggs, vegetable oil, brown sugar, milk, and vanilla extract until smooth.
03 - In a separate bowl, sift together flour, baking soda, salt, and cinnamon.
04 - Gently fold dry ingredients into wet mixture until just combined; avoid overmixing to maintain tenderness.
05 - Fold in chocolate chips and walnuts, reserving some for topping the batter.
06 - Pour batter into prepared loaf pan, smooth the surface, and sprinkle reserved chocolate chips and walnuts on top.
07 - Bake for 50 to 60 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs.
08 - Allow bread to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.