Pre heat oven to 350 degrees. Grease 8X8 baking dish with butter or oil.
In a large bowl, add egg and whisk. Add in remaining wet ingredients -milk, maple syrup, peanut butter and vanilla extract. Whisk all together.
Add in your oats, cocoa powder, chocolate chips, and a pinch of salt.
Pour oat brownie batter in prepared dish.
Bake 30-35 minutes. Allow to cool before cutting for more formed baked oatmeal or eat with a spoon while still warm.