Hash Brown Casserole

Ingredients

• 2 pounds frozen hash brown potatoes, thawed
• 1 1/2 sticks butter, melted (divided use)
• 1 teaspoon salt
• 1/2 teaspoon pepper
• 2 teaspoons dried onion flakes
• 1 (10.5-ounce) can cream of chicken soup
• 1/2 can milk (use soup can)
• 1 cup sour cream
• 2 cups cheese, grated
• 2 cups cornflakes, crushed