Core and slice apples and place in crockpot (if you don't have a high powered blender, you may want to peel your apples to make sure you get a smooth consistency).

Add apple juice, lemon juice, vanilla, brown sugar, cinnamon, nutmeg and salt to a small bowl. Whisk together, and pour over apples.

Cook on low for 6-8 hours.

Allow apples to cool; strain some of the liquid out. Place into a blender (you may need to split it up into smaller portions). Blend until smooth.

Store in an airtight container in the refrigerator.

Set to manual at high pressure for 8 minutes.

Allow pressure to naturally release for 10 minutes. Use an immersion blender to blend until the mixture is smooth, or pour into a blender and blend until smooth.

Pour the blended mixture back into the Instant Pot. Set to ‘saute’ and simmer until thickened to desired consistency, 15-30 minutes.