Preheat oven to 350 degrees.
Coat the inside of a 9x9 baking dish with butter, oil or non-stick spray.
Mix dry ingredients (oats, baking powder, salt, cinnamon, cocoa powder).
Beat in milk, eggs, coconut oil, maple syrup, and vanilla extract. It may look a little watery.
Add in chocolate chips last, reserving some for topping the mixture.
Bake for 30-35 minutes, until oats are tender and moisture has been absorbed.
Drizzle with a little maple syrup, to taste.