1 stick margarine
16 oz pkg. Velveeta cheese, cubed
4-8 oz shredded cheddar cheese
2 c milk
32 oz pkg. frozen diced hash browns
Melt margarine over low heat. Add cheese and milk. Cook and stir until well blended. Place potatoes in 9 x 13 pan. Pour cheese mixture over potatoes. Refrigerate overnight. Bake at 350˚ for 45 minutes to an hour.