Spray your crockpot or slow cooker with non-stick spray.
In a large bowl, combine the sour cream, cream of chicken, and butter. Gently fold in the mixture with the hash browns. Stir in the cheese (I like to set aside a few tablespoons of cheese to put on top).
Transfer to your slow cooker. Add salt and pepper to taste and cook on high for 2 to 3 hours or on low for 4 hours.