Loaded Mashed Potato Casserole

5 1/2 c mashed potatos (can use real or instant)
1/2 c milk
1 8oz pkg cream cheese (can use lite)
1 c sour cream (can use lite)
2 t parsley flakes
1 t garlic salt
1/4 t nutmeg
3/4 c cheddar cheese, shredded
1/2 c cooked/crumbled bacon

Beat the first 7 ingredients until smooth. Pour into a lightly greased 9x13 baking dish. Sprinkle with cheese and bacon. Cover and bake at 350 for 30 minutes. If you like your bacon extra crispy, wait and sprinkle it on the last 5-10min of baking.