Preheat to 400.
In a quality blender, blend together sweet potato, eggs, coconut oil, milk, and vanilla.
In a separate bowl, stir together cocoa powder, sugar, oat flour, cinnamon, and baking powder. Add to blender and blend for 30 seconds until mixed well.
Stir in chocolate chips.
Lightly spray 8x8 baking dish with olive oil cooking spray and then pour batter in dish.
Bake on middle rack for 30 to 35 minutes. Serve and enjoy!