01 - Preheat oven to 350°F. Grease and flour a 9x5-inch loaf pan or line with parchment paper.
02 - In a large mixing bowl, mash bananas until smooth. Whisk in eggs, oil, sugar, milk, and vanilla until well combined.
03 - In a separate bowl, whisk together flour, baking soda, cinnamon, and salt until evenly blended.
04 - Gradually fold dry ingredients into wet mixture until just combined. Do not overmix.
05 - Gently fold in chopped walnuts, reserving a few for sprinkling on top if desired.
06 - Pour batter into prepared loaf pan. Sprinkle reserved walnuts evenly over the top.
07 - Bake for 55–65 minutes, or until a toothpick inserted into the center comes out clean.
08 - Cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.