Preheat oven to 350°F. Line two baking sheets with parchment paper or spray lightly with cooking spray.
In blender or food processor, process oats until finely ground. Combine ground oats, flour, baking powder, baking soda, and salt in a bowl.
This recipe requires mashed beans, so you might as well use the same blender or food processor to mash the beans. I used approximately 140 grams of Great Northern beans & some of their liquid.
Combine mashed beans, oil, both sugars, molasses, egg, and vanilla in a separate bowl and beat well. Stir in oat/flour mixture. Stir in chocolate chunks. To make the cookies even better, stir in some nuts, dried fruit or maybe even banana chips!
Drop batter by tablespoonfuls onto baking sheets. Bake 12 minutes until centers are firm and edges are lightly browned. Transfer to wire rack to cool.