Grind the oatmeal until fine.
In a bowl, mix the oatmeal, cocoa powder, and baking powder.
In another bowl, mash and mix the eggs, banana, and almond milk.
Combine the dry mixture with the wet mixture, then add chocolate chips.
Pour the batter into a brownie pan.
Bake in a preheated oven at 180°C for 20 minutes.