Remove the core of the apples. Remove the skin only if you do not have a food mill. Quarter the apples. Place into a slow cooker set to high. Allow the apples to cook until they can be mashed with the back of a spoon.
If the sauce is too thin, cook it longer with the lid off until it reaches your desire consistency.
If you are using a food mill, run the sauce through the food mill.
Add honey or brown sugar stirring well until the sauce is as sweet as you want it to be.