Nutritional Analysis: One serving (3 stuffed shells with 1 tablespoon each sour cream and salsa and 1-1/2 teaspoons each olives and onions) equals 323 calories, 10 g fat (5 g saturated fat), 36 mg cholesterol, 787 mg sodium, 35 g carbohydrate, 4 g fiber, 23 g protein. Diabetic Exchanges: 2 lean meat, 2 starch, 1 vegetable, 1 fat.