In a small pot, bring milk to a boil over medium high heat. Once the milk has come to a boil, add the oatmeal.
Meanwhile, dice the apple. Add the apples pieces to the milk. I usually just add the apple to the milk once I have finished cutting it regardless of whether or not the milk has come to a boil.
Once most of the liquid has been absorbed, about 5 minutes, add the vanilla extract and pumpkin pie spice. Stir so that everything is well mixed.
Serve hot. Mike usually refrigerates it and eats it cold, but it's good either way.
Recipe by The Little Chef at http://littlechefblog.com/apple-pie-oatmeal/