Set the oven to 350 degrees F. Spray one 9×5 inch loaf pan with non-stick spray. Line with a strip of parchment paper and spray, if desired.
In a large bowl, add flour, baking soda, cinnamon and salt. Whisk together and set aside.
In a medium bowl, add sugar, vegetable oil, eggs and vanilla extract. Mix with a hand mixer on medium speed until smooth and well combined. Pour into the flour mixture.
In the same medium bowl, add bananas. Mash with a fork or potato masher until smooth with few chunks remaining. Add to the flour mixture. Mix all ingredients together on medium speed until well combined.
Pour batter into the prepared loaf pan. Bake for 60-65 minutes, or until an inserted toothpick comes out clean. Cool completely before slicing.
You can add in all sort of mix-ins. Chocolate chips, cinnamon chips, peanut butter chips, walnuts, pecans, toffee bits. Really anything goes. Use 1 cup total of mix-ins per loaf.