To make apple butter, start by making apple sauce. You can find my recipe at: http://freezermealexchange.blogspot.com/2011/10/red-hot-applesauce.html Leave out the red hots. You can also start with store bought applesauce.
Put the following in a crock pot:
4 quarts applesauce
1 1/2 Tbsp ground cinnamon
3/4 tsp. ground cloves
1/4 tsp. allspice
1 cup sugar (This can be changed to your taste. I don't like mine overly sweet. My mom likes it with no sugar. Store bought apple butter has much more sugar than this.)
Fill to within 1 inch of top of crock pot. Cover loosely and put towels around for splatter. Cook overnight. I have an old crock pot and I have to put mine on High for it to cook this down. I bet with newer crock pots, Low would be better.
The next morning, add 1 1/2 to 2 quarts more applesauce and another cup of sugar. Cook for a couple of more hours to mix the flavors.
Makes about 14 cups.