Nutritional Analysis: One serving (prepared with reduced-fat sour cream, fat-free mayonnaise and without additional toppings) equals 340 calories, 16 g fat (3 g saturated fat), 62 mg cholesterol, 963 mg sodium, 24 g carbohydrate, 2 g fiber, 24 g protein. Diabetic Exchanges: 3 lean meat, 1-1/2 starch, 1 fat.