Combine apples, apple cider, brown sugar, honey, and 1/2 teaspoon salt in a Dutch oven over medium heat. A slow cooker or instant pot can be used to speed things up.
Cook apples until soft (around 20 minutes). Stir often while cooking.
Remove from the heat and add lemon juice, cinnamon, and vanilla.
Puree the mixture until smooth (a blender works well for this).
Return the mixture to the Dutch oven and bake in the oven uncovered for 2.5 – 3 hours.
Stir every 30 minutes.
Cook until apples are the desired color, texture, and consistency.
Remove the cooked apple mixture from the oven and let it cool.
Transfer into an airtight container and keep refrigerated for up to 5 days.
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