Twice Baked Potato Casserole Recipe | Food Network UK

Ingredients

• 1 pound thin bacon
• 16 russet potatoes
• 6 tablespoons rapeseed oil
• 4 sticks (1 pound) salted butter, plus more for buttering baking dish
• 2 cups sour cream
• 2 cups grated Cheddar or Jack (or a mix of both), plus more for topping
• 2 cups whole milk
• 4 teaspoons seasoned salt
• 6 green onions, sliced
• Salt and freshly ground black pepper