Preheat the oven to 350 degrees F and line a baking sheet with parchment paper.
Combine the oats and oat flour in a large mixing bowl and toss to combine.
Grate the zucchini into the bowl. (I kept the skin on!)
Add the dates, banana, tahini, flaxseed meal, almond milk, cinnamon, and vanilla into a food processor or high speed blender (I found it easier in a food processor). Process until smooth, scraping down the sides if needed to recombine.
Add the date mixture to the bowl of dry ingredients. Stir well until everything is well incorporated.
Drop dough into ~1/4 cup cookies and flatten a little. They do not spread during baking.
Bake for 25-30 minutes, until golden brown on the bottom and firm to the touch.
Allow cookies to cool for 10 minutes on pan then transfer to a wire rack to cool.
You can drizzle some tahini on top when you eat it.
Store leftovers zucchini tahini breakfast cookies in the fridge for up to one week and freeze for long term storage.
Enjoy!