Prep the pan: Line a baking sheet or plate with parchment paper for easy removal.
Mash the bananas: In a medium bowl, mash the ripe bananas with a fork until mostly smooth. A few small lumps are fine.
Add wet ingredients: Stir in peanut butter (if using), honey or maple syrup, and vanilla. Mix until well combined.
Season the mix: Add cinnamon and a pinch of salt.
These boost flavor and balance the sweetness.
Fold in the oats: Add rolled oats and stir until everything is evenly coated. The mixture should be thick and scoopable, not runny.
Mix in extras: Fold in chocolate chips, coconut, nuts, or seeds if you like. Keep it balanced so the cookies hold together.
Shape the cookies: Scoop heaping tablespoons onto the lined sheet.
Flatten each scoop gently with the back of the spoon to form cookie shapes.
Chill: Refrigerate for 30–60 minutes, or freeze for 15–20 minutes, until firm and set.
Serve: Enjoy straight from the fridge for the best texture. They’ll be chewy and slightly fudgy.