Preheat oven to 325 F. Grease and lightly flour a loaf pan. (I greased with butter-flavored shortening)
In a medium bowl, mash the bananas until creamy and stir in the lemon juice. Set aside.
In another medium-sized bowl, whisk together flour, baking soda, baking powder, cinnamon, and salt. Set aside.
In a large bowl, cream together the butter and sugars with an electric hand mixer or stand mixer..
Beat in the eggs until combined.
Fold in the mashed bananas.
Add in the vanilla extract and buttermilk.
Mix until combined.
Add the dry ingredients to the wet ingredients.
STIR GENTLY AND JUST UNTIL THE FLOUR IS INCORPORATED. DO NOT OVERSTIR. (sorry for yelling)
Pour the batter into the prepared loaf pan.
Bake on the center rack for 1 hour and 10 minutes. Total time may vary. Check on the bread at the 1-hour mark. A Toothpick inserted into the center should come out clean, and the bread should be golden around the edges.
Brush the top of the bread with melted butter if desired when it comes out of the oven.
Let the bread cool for 5-10 minutes, then remove it from the pan and place it on a cooling rack to finish cooling.
Slice and enjoy! (Flavors will intensify the next day)
