Cut off tough ends of asparagus; cover asparagus with water in a skillet; bring to a boil and cook until tender but still firm (3-4 minutes).
Drain well. Divide asparagus into 4 bundles of 3 stalks each; wrap prosciutto slice around center of bundle.
Place the 4 bundles into oven-proof dish; dot with butter; season with pepper, and sprinkle with parmesan cheese.
Place in the oven to brown the cheese (4-5 minutes). Serve with lemon wedge.
Serves 4 Nutritional information per serving: Protein: 8 grams; Carbohydrates: 4 grams; Fat: 8 grams (saturated=5 grams) ; Calories: 113; Sodium: 385 mg; Cholesterol: 22 mg. Exchanges: 1 Vegetable, 1 High Fat Meat