Grind the oatmeal finely.
In a bowl, combine oatmeal, unsweetened cocoa powder, and baking powder.
Add soy milk and egg to make a batter.
Mix in chocolate chips.
Pour the batter into a small oven-safe dish.
Bake in a preheated oven at 180°C for 20 minutes.
Let it cool before removing from the dish.