Gather your ingredients and preheat your oven to 350 degrees Fahrenheit.
In a medium mixing bowl, whisk your eggs by hand for 30-60 seconds. Whisk in the pumpkin purée, milk, and vanilla until it's fully incorporated.
In a large mixing bowl, gently stir together the brown sugar, cinnamon, ginger, cloves, and baking powder.
Slowly add the wet mixture and oats to the dry mixture and stir until the dry ingredients are suffciently wet.
Grease an 8x8 or 9x9 inch baking dish with a non-stick cooking spray (or butter).
Pour your pumpkin pie oatmeal mixture into the greased baking dish.
Bake the oatmeal uncovered at 350 degrees Fahrenheit for 45 minutes.
Remove the oatmeal from the oven, and allow it to cool slightly before serving (about 10 minutes).
Slice and serve your oatmeal in a bowl.