Slow Cooker Apple Butter (15 servings) 4 cups peeled and chopped Granny Smith apples 3/4 cup packed dark brown sugar 2 Tablespoons balsamic vinegar 1/4 cup butter 1 Tablespoon ground cinnamon 1/2 teaspoon salt 1/4 teaspoon ground cloves 1 and 1/2 teaspoon vanilla This recipe makes about 2 cups of apple butter. In the crock pot, combine all of the ingredients EXCEPT for the vanilla and 2 Tablespoons of the butter. Cover and cook on low for 8 hours. Stir in the remaining butter and the vanilla. Allow apple butter to cool completely before serving. Stores well in the refrigerator for up to 2 weeks. Also see similar recipe: Crockpot Apple Butter Wonderful on toast or as a topping for waffles or crepes. Chop the apples coarsely for chunkier consistency. Mr Breakfast would like to thank AnaLola for this recipe. Recipe number 2099. Submitted 7/31/2007.