Preheat oven to 350. Lightly grease a 913 inch baking dish with non-stick cooking spray.
In a stand mixer or large mixing bowl, combine the oats, brown sugar, flour, ground ginger, baking powder and salt.
Beat in the eggs, milk, oil, vanilla, peanut butter until smooth and aloose batter forms. (It will seem runny, thats OK...the oats will soak up all the liquid as it cooks and the end result will be 'cake-like oatmeal'!)
Fold in the chocolate chips.
Pour batter into the greased baking dish and bake in the preheated oven for 30 to 35 minutes, or until cooked through in the center of the baking dish.
Let cool slightly before serving.
Serve Peanut Butter Chocolate Chip Baked Oatmeal with milk, yogurt, Greek yogurt, or as is.