Step 3
Pour milk mixture into soup in Instant Pot along with cream cheese. Bring mixture to a boil, whisking frequently, and let boil about 1 minute (you can also mash up the potatoes a little if desired). Serve warm with cheddar, bacon, and green onions or parsley. Note that soup will thicken as it rests (especially overnight with all those starches, so thin with more milk as desired).