Slow Cooker Peaches and Cream Steel-Cut Oatmeal
Do not substitute anything for steel-cut oats.
You can use half-and-half instead of milk, margarine instead of butter, and canned or frozen peaches instead of fresh.
The bowl placed inside of my slow cooker prevents the drying out of the oatmeal. Not to mention it is much easier to clean the bowl. Sort of makes a double boiler.