Combine ¼ cup Grated Parmesan Cheese, ¾ cup Ranch Salad Dressing,1/2 cup Shredded Mozzarella Cheese, ¼ cup sour creamChop artichoke and spinach. Now add it to the cheese, sour cream and ranch dressing mixture. Combine everything thoroughly.Spoon into 8 inch casserole dish with the mixture and top with remaining cheese.Bake on 350°F for 20-25 minutes.