Preheat the oven to 350. Spray an 8x8 baking dish with cooking spray.
In a medium bowl mix together all the ingredients. Pour into the prepared baking pan.
Bake for 25-30 minutes or until no longer jiggly.
Notes
Chocolate Chips - You can easily vary the sweetness of this by the amount of chocolate chips you add. A full cup makes it dessert sweet. For a slightly less sweet oatmeal use ¾ cup. Use ½ cup (and even omit the sugar) for a lightly sweetened oatmeal.