Skip to contentFinish the Sauce: Let the mixture heat through and thicken. Stir in the sour cream, 1 cup of the shredded cheddar cheese, salt, and pepper. Continue to cook until the cheese is melted and the sauce has thickened. Stir in the minced parsley.Assemble the Casserole: In a large bowl, mix the thawed hash browns with the prepared cheese sauce. Spread the mixture evenly into the greased casserole dish.Bake: Spread the remaining 1 cup of shredded cheddar cheese on top of the casserole. Bake for 35-40 minutes, or until the casserole is browned and bubbling around the edges. 
