chopped pecansbrown sugar and molasses - optional garnish to serve
Spray the slow cooker insert with cooking spray.
Add all ingredients to the slow cooker and stir to combine.
Cook overnight on low for 8 hours.
In the morning, stir oatmeal with a fork to loosen the steel cut oats and make sure everything is fully incorporated.
Serve warm with chopped pecans and additional brown sugar and molasses to taste.
For easier clean-up and to avoid the slight "crusty" residue inside the slow cooker, place all ingredients in a glass bowl that fits into the slow cooker then add enough water to fill the lower half of the slow cooker. Cover and cook on low for 6 to 8 hours.