Put oats, water, apple, cranberries, and cinnamon in slow cooker on low setting.
Cook for about 8 hours (longer is fine)
Serve hot, with toppings of your choice.
If you put leftover cooked steel cut oatmeal in the fridge, you can reheat again in the slow cooker. Just add some liquid; (I stir in some almond milk). You can also reheat in the microwave, if desired.Calories and other nutrition info are without toppings.