In a medium saucepan, combine the rolled oats, almond milk, pumpkin puree, maple syrup, pumpkin pie spice, vanilla extract, and salt. Stir until well blended.
Cook over medium heat, stirring occasionally, for about 5 minutes or until the oatmeal has thickened to your desired consistency.
Once cooked, remove the saucepan from heat and let it cool slightly for a few minutes.
Divide the oatmeal mixture evenly among the 4 mason jars.
Top each jar with optional toppings like chopped nuts, banana slices, or a dollop of yogurt for added flavor and texture.
Seal the jars with lids and refrigerate for up to 5 days.
You can enjoy these oatmeal jars warm or cold, depending on your preference. Simply reheat in the microwave for a quick breakfast.
Feel free to adjust the sweetener according to your taste by adding more or less maple syrup or honey.