In a spacious bowl, mix together the rolled oats, pumpkin puree, vanilla protein powder, maple syrup, pumpkin pie spice, chia seeds, and milk. Make sure everything is well combined for a creamy texture.

Stir the mixture thoroughly until it's evenly blended, and the oats are coated in the pumpkin goodness.

Cover the bowl with a lid or plastic wrap and refrigerate it overnight, or let it chill for at least 4 hours.

When you're ready to enjoy your oats, you can serve them chilled directly from the fridge or warm them up slightly in the microwave.