01 - Preheat oven to 350°F. Grease a 9x5-inch loaf pan or line with parchment paper.
02 - Whisk together flour, baking soda, cinnamon, and salt in a medium bowl.
03 - In a large bowl, beat the softened butter and granulated sugar until the mixture is light and fluffy.
04 - Beat in the eggs one at a time. Mix in the vanilla extract and mashed bananas until well incorporated.
05 - Alternately add the dry ingredients and milk to the wet mixture, starting and finishing with the dry ingredients. Stir gently until just combined.
06 - Gently fold in the nuts or chocolate chips if using.
07 - Transfer the batter to the prepared loaf pan and smooth the surface evenly.
08 - Bake for 50 to 60 minutes or until a toothpick inserted into the center emerges clean.
09 - Allow the bread to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.