Preheat the oven to 325 degrees F. Line a cookie sheet with parchment paper.
In a medium sized bowl, mash the ripe banana with a fork.
Add the sunbutter, cocoa powder, and maple syrup, and stir until totally combined. (It will take a minute to get all the cocoa powder incorporated into the mix).
Drop the batter by rounded tablespoons onto the prepared cookie sheet.
Bake at 325 degrees F for 15 minutes.
Top with the large flake sea salt as soon as the cookies come out of the oven if desired.
Let the cookies cool completely on the cookie sheet. Store in an airtight container
Notes
This recipe makes about 14 cookies.Nutrition facts are for 1 cookie.This recipe should work with any nut or seed butter. You can use whichever butter is best for your particular dietary needs.Store leftover cookies in an airtight container. They should stay fresh for about 3 days.