Oatmeal Banana Bread Cookies

- 1 large ripe banana (mashed) - ½ cup of sugar - 1/3 cup of softened butter - 1 large egg - ¾ cup of oats (quick or rolled) - ½ cup all-purpose flour - ¼ cup whole-wheat flour - ¼ tsp baking soda - 1/8 tsp cinnamon