Preheat oven to 350° F degrees. Spray a 2-quart dish (I used a 9x9 glass baking dish) with cooking spray.

In a large bowl, whisk together the pumpkin puree, brown sugar, maple syrup, eggs, pumpkin pie spice, cinnamon, nutmeg, cloves, salt, baking powder, and vanilla. Whisk in the milk until very smooth. Stir in the oats until thoroughly mixed, and spread evenly in the prepared dish.

Cover the dish with foil and bake for 30 minutes. Remove foil and bake for another 15 minutes. Allow to cool/set for at least 10 minutes. Cut into 9 or 12 squares, or if you want to use a biscuit cutter to cut the oats in perfectly portioned circular shapes, for a pretty presentation.

This can be eaten warm right out of the oven or refrigerated until ready to serve.