Apple Butter

8 large Granny Smith apples, peeled and diced
1 c apple juice (I juice granny smiths until I get enough juice)
1 c granulated sugar
1 tsp ground cinnamon

In a cast iron pot (Dutch oven) cook the diced apples and apple juice over medium heat for 30 min or until the apples are tender. Mash the apples, and stir in the sugar and the cinnamon. Preheat the oven to 275 and pour the apple mixture into a lightly greased 11 x 7 baking dish. Bake the apple butter for 5 hours, stirring every hour, or until of a spreading consistency. Cover and chill.