Preheat the oven to 350 degrees F. and lightly oil and 8x8 baking dish.
Place the banana in the baking dish and mash it until creamy. Add the milk, vanilla extract, agave, cocoa powder, salt, and baking powder. Mix well until all the ingredients are fully incorporated.
Add the oats and mix well.
Top with the vegan chocolate chips or chunks if using, and press them into the top of the oats.
Bake for 25 minutes.
Remove from the oven and allow it to sit for 10 minutes before eating.
Enjoy hot or cold.
