In a mixing bowl, combine the rolled oats, almond milk, pumpkin puree, maple syrup, pumpkin pie spice, vanilla extract, and a pinch of salt.
Stir the mixture well until all ingredients are thoroughly combined.
Divide the mixture equally between two airtight containers or jars.
Cover the containers and refrigerate overnight (or for at least 4 hours) to allow the oats to soften and absorb the liquid.
In the morning, give the oats a good stir. If desired, add a splash more milk to loosen the consistency.
Top with your favorite optional toppings like nuts, seeds, or more pumpkin pie spice.
Enjoy your delicious pumpkin overnight oats cold or warmed up!