Combine the milk, steel-cut oats and salt with 1/4 cup brown sugar and 3 cups water in a 5- to 6-quart slow cooker. Cover and cook overnight on LOW for 9 1/2 to 10 hr.Advertisement
Uncover and stir in 1/4 cup brown sugar until smooth. (For looser oatmeal, stir in up to 1 cup 1% milk with the brown sugar.) Tip: If you have a smaller family, make individual batches in your fridge instead. Combine equal parts milk and old-fashioned oats (steel-cut oats need cooking) in a jar with a pinch of salt and sugar to taste. Stir and seal. Refrigerate overnight.