Preheat the oven to 350 F and line a large sheet pan with parchment paper.
In a mixing bowl, mash the 2 spotted bananas with a potato masher or fork.
Stir in the ¼ cup honey, 1/2 cup tahini , 2 teaspoons vanilla extract, 1 large egg, and 2 teaspoons lemon zest, and whisk until smooth.
Add the 2 1/4 cups quick oats, 1 teaspoon baking powder, and 1/2 teaspoon fine kosher salt, using a spatula, stir to incorporate.
Fold in the ⅔ cup fresh blueberries.
Spoon dollops of mixture into the prepared sheet pan and shape into cookies. The cookies will mostly keep their shape.
Bake for 10-12 minutes, then allow to cool in the pan.
Video
Notes
Note: You will taste the tahini in these cookies. If you aren't a fan, I suggest you swap it with a nut butter like almond butter or cashew butter. My kids preferred it with almond butter instead.
Use rolled oats or quick oats. I liked using quick oats for this. If you want to use a gluten-free option that's fine too.
Fresh or frozen blueberries will work.
Allow the cookies to cool for 10 minutes before handling and serving.