Preheat the oven to 350 degrees. Grease a 9x5 loaf pan.
In a large mixing bowl, mix sugar, butter, eggs and vanilla extract.
In a separate medium bowl, mix flour, baking powder, baking soda and salt.
Slowly mix the dry ingredients into the wet ingredients with a hand mixer until all the ingredients are combined.
Add in the mashed bananas and mix well with a hand mixer.
Pour the batter into the greased loaf pan.
Cook for 50-60 minutes or until a toothpick comes out clean from the middle.
Allow to cool for 10 minutes and remove the bread from the pan.
Slice and serve.