In a 4-quart Dutch oven or large saucepan cook pasta in boiling water according to the package directions; drain. Return to the same pan. Keep warm.
Meanwhile, in a 10-inch skillet cook fennel in hot oil for 3 minutes. Add asparagus; cook for 4 minutes or until nearly tender. Add tomatoes and prosciutto; cook for 2 minutes or until heated through. Add fennel mixture to pasta, tossing gently to mix. Divide mixture among 3 dinner plates. Sprinkle with Parmesan cheese. Season to taste with salt and pepper. Makes 3 servings.