Crock Pot Apple Butter Recipe

picture of http://www.southernplate.com

Ingredients :
2- 3 lb (50 oz) jars unsweetened apple sauce
3 lbs granny smith apples
4 cups sugar
1 1/2 cups apple juice
2 tsp cinnamon
1 tsp cloves
1 tsp allspice

How to Make Crock Pot Apple Butter Recipe?