Brew the espresso and allow it to cool completely.
Add the oats, milk, Greek yogurt, protein powder, chia seeds, vanilla, pumpkin, pumpkin pie spice, espresso and salt to a blender. Blend until completely smooth and creamy.
Taste. You’re looking for **coffee first, pumpkin second, with warm spice in the background**. If the coffee flavor is too mild, add another 1/2 to 1 shot espresso. Add sweetener if desired.
Divide evenly among **4 jars**. Cover and refrigerate overnight, or at least 4 hours.
The next morning, stir and taste again. Adjust the sweetness if necessary.
If desired, mix a little nonfat Greek yogurt with sweetener and vanilla and spoon it over each jar. Finish with a sprinkle of cinnamon or pumpkin pie spice. Or top with canned or fresh whipped cream if desired. I use the reduced fat spray can for mine.