Peel, core and cut the apples into small chips. Put all the ingredients into a slow cooker and stir. Cover and cook on low overnight, about 8 to 10 hours.
Remove the cover, stir and taste.
Add more spices or sugar, if desired. Continue cooking for a few more hours, uncovered, until some of the liquid is reduced and the butter has cooked down a bit.
Pour into sterilized jars and refrigerate.
Serve over hot biscuits, toast, scones, or just eat it out of the jar if no one is looking!