In a medium bowl or large mason jar, combine the oats, pumpkin puree, milk, cooled coffee, maple syrup, pumpkin pie spice, vanilla extract, and salt.
Stir everything together until well combined and the pumpkin is fully incorporated with no lumps.
Divide the mixture between two mason jars or airtight containers.
Cover and refrigerate for at least 4 hours or overnight (they're best after sitting overnight).
In the morning, give them a good stir, add your favorite toppings, and enjoy cold or warmed up in the microwave for 30-60 seconds.