Twice Baked Potato Casserole – Lodge Cast Iron

Ingredients

• 12 medium potatoes
• ¾ cup sour cream
• ½ cup heavy cream
• 1 ½ cups milk
• ¾ cup cream cheese
• 6 tablespoons unsalted butter, melted
• 1 egg, beaten
• 1 tablespoon minced garlic
• ½ teaspoon salt
• ½ teaspoon pepper
• 1 pound cooked bacon, chopped and divided
• ½ cup chopped scallions, divided
• ½ cup shredded cheddar cheese