I've used this one often... it's easy and freezes really well:
3 to 4 lbs of peeled, cored, and quartered apples. (Make sure you use a good cooking apple like Golden Delicious, Granny Smith, Fuji, Jonathan, Mcintosh, or Gravenstein.)
4 strips of lemon peel - use a vegetable peeler to strip 4 lengths
Juice of one lemon, about 3-4 Tbsp
3 inches of cinnamon stick (be sure it's fresh)
1/4 cup of dark brown sugar
up to 1/4 cup of white sugar
1 cup of water
1/2 teaspoon of salt
Method
1 Put all ingredients into a large pot. Cover. Bring to boil. Lower heat and simmer for 20-30 minutes.
2 Remove from heat. Remove cinnamon sticks and lemon peels. Mash with potato masher.
You can put it in individual freezer proof containers or even freezer bags and it'll keep for at least a year in a good, cold freezer...
Freezes easily, lasts up to one year in a cold freezer.