Place in slow cooker, sprinkle sugar, cinnamon, water, lemon juice and nutmeg over apples. Toss to combine.
Cook on low for 5-6 hours or high for 3-4 hours.
When apples are soft use a potato masher or fork to break up any large chunks. If you want a smooth applesauce use an immersion blender or let the apples cool and place into a blender and blend until smooth.
Store in refrigerator in an airtight container for up to a week, or freeze for up to 3 months.