Grease slow cooker pot very well non-stick cooking spray, or use a slow cooker liner.
Add oats, water, cider, apples, honey, cinnamon, nutmeg, allspice, and salt to slow cooker and stir to combine.
Cover and cook on low for 7-8 hours.
To serve, allow the oats to cool slightly before spooning into bowls and topping with fresh chopped apples, pecans, and some real maple syrup if desired.
Notes
It very important to either line or heavily grease the sides of your slow cooker crock before preparing this recipe. If you skip this step, the oats will stick to the sides and will be very difficult to remove.