Frozen Mashed Potato Casserole

Directions

1. 1
   Put first three ingredients in a pan and bring to a boil. Stir in instant potatoes.
2. 2
   Add cream cheese and sour cream.
3. 3
   Mix with mixer.
4. 4
   Grease a 9 x 13-inch pan and a 9 x 9-inch pan.
5. 5
   Fill with potato mixture.
6. 6
   Freeze if you want to use later, or bake at 350° for 30 minutes.
7. 7
   Sprinkle Cheddar cheese on and continue baking until cheese melts.
8. 8
   Serve.