Grease slow cooker with non-stick agent of choice.
Cut pears into quarters. Remove core and stem. You do not need to remove the skin.
Add 4 - 5 lbs ripe pears, 2 cups dark brown sugar, ½ cup lemon juice, 2 tsp vanilla extract, and 2 tsp sea salt to slow cooker.
Cover and cook on low for 6-8 hours or high for 3-4 hours until pears are super soft.
Use an immersion blender to fully blend into a butter-consistency.
