Move oven rack to low position so that tops of pans will be in center of oven.
Heat oven to 350°F.
Line pans with parchment paper, or grease bottoms only of 2 loaf pans, 8 1/2x4 1/2x2 1/2 inches.
In a stand mixer, mix maple syrup and butter until creamy. Add eggs and mix until well blended.
Add bananas, buttermilk and vanilla. Mix until smooth.
In a large bowl, combine flour, baking soda, and salt using a whisk. Pour this mixture slowly into the wet ingredients, mixing on slow until well combined.
If using nuts, fold them in at this point.
Pour the mixture into the two prepared pans.
Bake 8-inch loaves about 1 hour, 9-inch loaf about 1 1/4 hours, or until toothpick inserted in center comes out clean.
Cool 10 minutes. Loosen sides of loaves from pans; remove from pans and place top side up on wire rack.
Cool completely, about 2 hours, before slicing.
Enjoy!