Combine the rolled oats, pumpkin puree, milk, ground cinnamon, nutmeg, cloves, honey, and a pinch of salt in a mixing bowl. Stir everything thoroughly until the mixture is smooth and the oats are evenly coated.
Pour the mixture into a jar or airtight container, spreading it out evenly. Seal the container with a lid.
Place the jar in the refrigerator overnight, allowing the oats to soak up the flavors and develop a creamy, tender texture.
In the morning, remove the jar from the fridge and give the oats a gentle stir to combine any settling. The mixture should be thick, velvety, and fragrant with pumpkin and spices.
Spoon the pumpkin spice oats into bowls and top with your favorite garnishes like nuts, seeds, or a drizzle of honey if desired.
Enjoy your cozy, nourishing pumpkin spice overnight oats as a delicious start to your day!