Preheat the oven to 350 degrees. Line a cookie sheet with parchment paper.
In a large bowl, mash bananas and add egg, olive oil, tahini and vanilla. Whisk to combine until smooth.
In a separate bowl, mix dry ingredients and set aside.
Stir dry ingredients into wet until well combined.
Next, add your add-ins! Mix thoroughly.
Scoop the dough using an ice cream scoop. The cookies don't spread, so you can fit approximately 9-12 cookies on your prepared cookie sheet. Dampen your fingers and lightly flatten the cookies into desired circles.
Bake for 15 minutes or until lightly browned.
Once baked, let cool on a wire rack.
