Ingredients

• 3 10-ounce packages frozen spinach, thawed
• 1 cup low-fat milk
• ¼ cup all-purpose flour
• ¼ teaspoon salt
• ¼ teaspoon white or black pepper
• ⅛ teaspoon nutmeg
• 1 cup extra sharp cheddar cheese, divided
• 1 cup low-fat cottage cheese
• 3 large egg whites