Preheat your oven to 350°F.
Grease the bottoms of two 8 x 4-inch loaf pans.
This helps prevent sticking.
In a large bowl, mix sugar and softened butter until light and fluffy.
Use an electric mixer for best results.
Add eggs, mashed bananas, buttermilk, and vanilla extract.
Continue mixing until the batter is smooth.
In another bowl, whisk together flour, baking soda, and salt.
Gradually add to the wet mixture, combining well.
Divide the batter evenly between the prepared loaf pans.
Bake for 50-60 minutes or until a toothpick inserted comes out clean.
Cool for 10 minutes in the pan then transfer to a wire rack.