Wash the apples, then peel, core, and cut into slices.
Add the apples, water, and lemon juice to the Instant Pot insert. (Don’t go over the max fill line.)
Lock the lid on the pot, and pressure cook 5 minutes on high.
Once the cooking time is up, let the Instant Pot release pressure naturally for 10 minutes, then use the handle of a wooden spoon to quick-release the remaining pressure. If liquid spurts through the vent, close it, and give it 5 more minutes to release naturally before venting.
Carefully open the lid away from you and set it aside.
Mash the apples into applesauce with a potato masher, a wooden spoon, or an immersion blender
Add honey, if desired.
Serve warm or chilled.