Melt the butter in a large skillet. Add mushrooms, garlic and prosciutto. sauteFor 2 to 3 minutes. Add peas, cream and cheese. Cook until sauce thickens. Cook tortellini according to package directions. Drain. Add tortellini to sauce. Toss until well coated. Sprinkle with parsley. Serve immediately. Per serving: 511 Calories (kcal); 38g Total Fat; (65% calories from fat); 18g Protein; 26g Carbohydrate; 166mg Cholesterol; 987mg Sodium Food Exchanges: 1 1/2 Grain(Starch); 1 1/2 Lean Meat; 1/2 Vegetable; 0 Fruit; 6 1/2 Fat; 0 Other Carbohydrates Converted by MM_Buster v2.0n.