Cheesy Potato Casserole 1 (2 pound) package frozen hash brown potatoes (partially thawed) 2 (10 ounce) cans Cheddar cheese soup 1 (13 ounce) can evaporated milk 1/2 can French fried onion rings, divided Salt and pepper Combine all ingredients, except half the onion rings, and pour into greased crockpot. Cover and cook on LOW for 8 to 9 hours or on HIGH for 4 hours. Sprinkle remaining onion rings on top before serving.