Preheat oven to 350°F (175°C).

Line a baking sheet with parchment paper.

Mash the bananas in a large mixing bowl.

Add almond butter, maple syrup, and vanilla; mix well.

Add rolled oats and baking powder; stir to combine.

Fold in chocolate chips and cinnamon if using.

Let the mixture rest for a few minutes so the oats soften.

Scoop spoonfuls of dough onto the baking sheet.

Flatten slightly with your fingers or the back of a spoon.

Bake for 10–12 minutes, or until edges are lightly golden.

Cool on the baking sheet for 5 minutes, then transfer to a rack.