Peel, core, and chop into 1-inch chunks. If you like rustic texture, leave some peel on for extra fiber and color.
Add apples, water (or cider), lemon juice, and optional salt to a medium saucepan.
Cover and cook over medium-low heat for 18–25 minutes, stirring once or twice. You're looking for tender, slumpy apples that mash easily.
For chunky, mash with a potato masher. For smooth, use an immersion blender. For ultra-silky, blend in a high-speed blender for 30–45 seconds.
Stir in cinnamon, nutmeg, or vanilla if using. Taste before adding—ripe apples might not need anything.
Let it sit 10 minutes to thicken slightly. Serve warm, room temp, or chilled—there's no wrong answer.