In a 4-quart slow cooker, combine the apples, brown sugar, sugar, apple cider vinegar, cinnamon, ginger, and salt.
Mix well.
Cover and cook on low for 10–12 hours, stirring occasionally, until the apple butter is thick and deep golden brown.
For a thicker consistency, remove the lid after 8 hours and continue cooking uncovered.
Stir more frequently as the mixture thickens to prevent burning, scraping the sides and bottom of the slow cooker thoroughly each time.
If a smoother texture is desired, blend the apple butter using an immersion blender.
Spoon into sterilized 1-cup jars or freezer containers for storage.
Notes / Tips / Wine Advice:
Refrigerate up to 2 weeks or freeze up to 2 months.Serving Tip:Enjoy spread on toast, stirred into oatmeal, or as a substitute for oil in baked goods.Wine Advice:Pairs wonderfully with a crisp hard cider or a glass of spiced mulled wine.