Heat your oven to 350° and grease the bottoms of two 8x4 inch loaf pans.
In a large bowl, mix together the sugar and softened butter until creamy. I use an electric mixer for this.
Mix in the bananas, eggs, buttermilk, and vanilla. Beat until creamy.
Mix in the flour, baking soda, and salt until combined. If you are using nuts, add them now.
Pour the batter evenly into the two loaf pans.
Bake for 60 minutes or until a toothpick or butter-knife inserted near the center comes out clean.
Let them cool for 10 minutes in the pan and then, let them finish cooling out of the pans on a wire rack.