Slow Cooker Overnight Steel-Cut Oats
Wake up to warm, nutty, cinnamon-apple steel-cut oatmeal slow-simmered overnight while the whole house sleeps.

slow-cooker Timer
Set for 480 mins @ LOW / WARM (180°F / 82°C)
Ingredients
Base recipe calibrated for 6 adults.
Get to the Point Execution
Butter the slow cooker insert heavily to prevent sticking along the edges.
Add 1.5 cups steel-cut oats, 4 cups water, 2 cups milk, 2 diced apples, brown sugar, and cinnamon.
Cover and cook on LOW for 7–8 hours (or WARM if your cooker runs hot).
Stir well in the morning and serve with a splash of cold cream and maple syrup.
Step-by-Step Guided Instructions
Rub 1 tbsp softened butter or nonstick cooking spray heavily along the bottom and lower 4 inches of the ceramic slow cooker insert.
Buttering the sides prevents oatmeal starches from crusting and burning along the waterline overnight.
Add 1.5 cups coarse steel-cut oats, 4 cups water, 2 cups whole milk (or almond milk), 2 peeled and diced Honeycrisp apples, 1/4 cup brown sugar, 1.5 tsp ground cinnamon, and 1/2 tsp kosher salt. Stir with a wooden spoon.
Use steel-cut oats only — rolled oats or quick oats will break down into gluey mush over 8 hours.
Cover with lid and set slow cooker to LOW for 7 to 8 hours (or WARM if your model has a high-heat low setting). Let cook undisturbed while everyone sleeps.
The gentle low temperature swells the steel-cut oat groats, creating a creamy texture with a delightful al dente chew.
In the morning, uncover and stir thoroughly — the porridge will look set on top but turns creamy as you stir. Ladle into bowls and top with pure maple syrup, chopped pecans, and a splash of cold milk.
Stirring incorporates the softened apples and cinnamon evenly throughout the pot.
Load the slow cooker before going to bed. While you sleep, the oats slowly absorb the milk, apples, and cinnamon. When the kids wake up on a cold morning, the whole house smells like warm apple pie and hot breakfast is ready with zero morning cooking.
Let kids top their own bowls with mini chocolate chips, sliced bananas, or extra maple syrup.
- Crispy bacon strips
- Hot black coffee
- Fresh orange juice
Reheat leftover oatmeal in microwave with 2 tbsp milk for 1 minute.