01 - Peel, core, and slice the apples into 1/2-inch wedges for even cooking.
02 - Place apple slices in the Instant Pot. Sprinkle brown sugar, cinnamon, nutmeg if using, and salt over the top.
03 - Drizzle with maple syrup or honey if desired, then add the water or apple juice.
04 - Distribute the butter pieces evenly across the apples.
05 - Close the lid and set to sealing. Cook on high pressure for 2 minutes.
06 - Allow natural pressure release for 3 minutes, then carefully quick-release any remaining pressure.
07 - Open the lid and stir in vanilla extract. For thicker syrup, use Sauté mode and simmer a few minutes, stirring gently.
08 - Serve warm over oatmeal, pancakes, or ice cream, or enjoy on its own.