Mashed Potato Casserole

5 cups mashed potatoes (I used 7 medium russet potatoes)
1/2 cup milk
1/4 melted butter
1 (8 oz) package cream cheese, softened
1 cup sour cream
1/2 teaspoon garlic powder
1/4 teaspoon ground nutmeg
1 1/2 cup shredded cheddar cheese, divided
1 pkg bacon, cooked, crumbled
1/4 cup chopped scallions
1/4 tsp pepper
1/2 tsp salt

Preheat oven 350 degrees.

Peel, dice, and boil potatoes for about 10 minutes or until soft. Drain potatoes and beat with a mixer until desired consistency (I like little chunks of potato). Add milk, cream cheese, sour cream, garlic powder, nutmeg, salt and pepper. Stir in 1 cup cheese, bacon and scallions.

Pour into 9x13 baking dish. Top with remaining cheddar cheese. Bake for about 10 minutes- until cheese is melted.