In a large mixing bowl, combine the mashed bananas, oil, and brown sugar. Stir until fully blended.
Add the applesauce and vanilla extract to the bowl and mix well.
In a medium bowl, whisk together the flour, baking soda, cinnamon, and salt.
Add the dry ingredients to the wet mixture and stir until just combined.
Fold in the vegan chocolate chips, if using.
Preheat the oven to 350 degrees Fahrenheit and line a cookie sheet with parchment paper or a silicone baking mat.
Using a 2-tablespoon cookie scoop, portion the dough onto the prepared baking sheet. Lightly flatten each scoop with a spatula.
Bake for 11–12 minutes, or until the edges are set and the cookies are slightly golden.
Remove from the oven and let the cookies cool on the baking sheet for 10 minutes.
Transfer to a cooling rack and allow them to cool completely before serving.
Notes
Use overripe bananas: Bananas with peels covered with brown/black spots have a stronger, sweeter flavor – perfect for banana bakes!
Measure the flour properly: First, fluff it in its bag, spoon it into the cup, and level with the back of a knife (to avoid dry, crumbly, and/or dense cookies).
To adjust the texture: Banana plays a big role here. Use slightly less for crispier cookies or add more for softer, cake-like cookies. Baking time also plays a role.
Don’t overwork the dough: Mix until only just combined to avoid tough banana bread chocolate chip cookies.