Preheat oven to 350 degrees F. Line 2 sheet pans with parchment or silicon baking mats.
Move oven racks to the second from top and second from bottom slots.
In a medium bowl, mash the bananas.
Add the oats, protein powder, egg, cinnamon, salt, vanilla, and peanut butter and chocolate chips and mix with a fork until combined.
Scoop ¼ cup of mixture and place on a baking sheet, flatten the top slightly with the back of the measuring cup. Repeat with remaining mixture, adding 4 cookies to each sheet.
Bake for 16 to 20 minutes, rotating pans ½ through bake time to allow for even browning.
Allow to cool 5 minutes on the pan then transfer to a wire rack to cool completely.
Video
Notes
Store in an airtight container in the refrigerator for up to 4 days. Can be eaten warm, cold, at room temperature or warmed in the microwave for 10 seconds.