Coat the inside of a Crockpot with nonstick cooking spray. Add the steel-cut oats, water and salt. Stir to combine.
1 cup steel-cut oats, 4 cups water, 1/2 tsp salt
Nestle the peeled sweet potato halves on top of the oat mixture with the cut sides facing up. Do not stir them into the oats.
1 medium sweet potato
Sprinkle the brown sugar, cinnamon and nutmeg over the exposed sweet potato flesh. Divide the butter between the halves, placing it directly on top.
1/4 cup brown sugar, 1 tsp ground cinnamon, 1/4 tsp ground nutmeg, 2 Tbsp salted butter
Cover and cook on Low for approximately 7 hours, until the oats are cooked and the sweet potato mashes easily. If the sweet potato is still firm in the center, cover and continue cooking until tender.
Use a potato masher to mash the sweet potato directly into the oatmeal. Add the vanilla and stir thoroughly until evenly combined.
1 tsp vanilla extract
Let stand for 5–10 minutes. Spoon into bowls and serve with your choice of toppings.
maple syrup, chopped pecans, brown sugar, milk or cream, granola