Wash, core, peel and chop your pears (peeling is optional).

Add all of your ingredients to your crock pot and cook on low overnight for 9-12 hours.

Puree pears with an immersion blender or put everything into a blender and then put the puree back into the crock pot.

Cook on low for a few more hours or until the pear butter reaches your desired thickness (I did another 6 hours).