Sprinkle the brown sugar and cinnamon all over the apples, then pour in the apple cider. Gently toss to coat the apples.
Seal instant pot and cook on high pressure for 15 minutes. Once cooking has completed, do a quick release of the pressure.
Puree the pressure cooked apples. You can use an immersion blender to do this right in the pot, or place the apples in a blender, then return to the Instant Pot for the next step.
After the apples have been pureed, sauté them in the Instant Pot on the "less" setting for 15-45 minutes, until the puree has turned a brown color and been reduced to your liking. Be sure to stir regularly during this time.
Allow to cool, then place in an airtight container (I used two of these mason jars) and store in the refrigerator until ready to eat.
Notes
*I ended up with about 16oz of apple butter which gave me 32 1tbsp servings.