Preheat oven to 325 degrees Fahrenheit and line a baking sheet with parchment paper or a silicone baking mat.
Mash banana with a fork until smooth.
In a large bowl mix all ingredients one at a time, kneading well after each addition.
Once dough is well mixed roll dough into 1/2 inch balls and place them a inch apart onto the prepared baking sheet. Press down on the tops with a fork to flatten.
Bake for 25 to 30 minutes. Cool and refrigerate.
Makes 2 to 3 dozen rounds