Preheat the oven to 350F and line two cookie sheets with parchment paper.

If using rolled oats pulse 5-6 times in a food processor. If you are using quick cooking oats you do not need to do this.

In a large mixing bowl combine the mashed banana, oil, sugars and vanilla. Mix well to combine and make sure there are no lumps of brown sugar.

In a separate bowl sift the all-purpose flour and add the baking soda, salt and cinnamon. Whisk well to combine.

Add the dry ingredients into the wet ingredients and stir until jut combined, then add the oats, pecans and chocolate chips.

Mix well until the oats are completely moist. Scoop out 1.5 Tablespoons of dough for each cookie and place on prepared cookie sheet 2 inches apart. Flatten each cookie a little with the palm of your hand.

Bake at 350 for 1-12 minutes, the cookies should be lightly browned. Allow to cool on the cookie sheet for a few minutes before moving to a cooling rack.