Weigh and wash your apples.
Peel, core and slice apples.TIP: An apple, corer, peeler, slicer tool makes this job so easy. Add apples to your crockpot. TIP: I'm not a fan of using plastic liners for this recipe because it cooks so long and I want to make sure no plastic breaks down in the jam. Add brown sugar, cinnamon, salt and lemon juice to the apples and stir.NOTE: Lemon juice adds a brightness to the apples. Add lid and cook on high for about 8 hours. TIP: Don't be tempted to lift lid...it only lengthens cooking time. When you have cooked the apples for about 8 hours, remove the lid and check the consistency. If there's more liquid than desired, simply cook with lid off for another hour.
You can add the jam to freezer containers OR water bath can them.
If canning, add to sterilized canning jars and fill to about 1/2" from the top. Wipe tops and sides of jars off with a clean, damp cloth.
Add lids (no longer do they have to be sterilized) and rings to finger tightness only.
Fill the waterbath canner with enough water to cover the jars by at least an inch of water after they are added with a jar lifter.
Cover and when the water is boiling, begin canning time and waterbath them for 15 minutes.
When finished canning, remove lid and let jars sit for about 5 minutes before using a jar lifter to remove them from the canner and onto a cloth covered surface out of drafts.
Let jars cool for 24 hours before moving and labeling them. NOTE: Do NOT push down on lids during the cooling process. Any jars with lids that don't seal should be added to the fridge and used; OR added to freezer containers for safe storage. Enjoy on biscuits or toast!