Start by greasing a 9×5 inch loaf pan with a dab of oil and lining it with parchment paper.
Preheat your oven to 325°F.
In a large bowl, mash the bananas until smooth. Crack in the eggs, pour in the oil, and add both sugars and vanilla extract. Whisk it all together.
In another bowl, whisk together the flour, baking soda, and a pinch of salt. Keeping these separate at first ensures a light crumb.