Penne Salad with Roast Beef, Arugula, Radicchio, and Capers

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Ingredients

1. 3/4 pound penne
2. 1/4 pound arugula (about 2 bunches), stems removed, leaves torn into pieces
3. 1 head radicchio (about 6 ounces), torn into pieces
4. 1/4 cup drained capers
5. 6 tablespoons olive oil
6. 3 1/2 tablespoons balsamic vinegar
7. 3/4 teaspoon salt
8. 1/2 teaspoon fresh-ground black pepper
9. 1/2 pound thin-sliced cooked roast beef, cut into strips
10. 2-ounce chunk Parmesan cheese, or 3 tablespoons grated Parmesan

1. In a large pot of boiling, salted water, cook the penne until just done, about 13 minutes. Drain, rinse with cold water, and drain thoroughly.
2. In a large bowl, toss the pasta with the arugula, radicchio, capers, oil, vinegar, salt, and 1/4 teaspoon of the pepper. Add the roast beef and toss again.
3. To serve, mound the salad on plates. Top each with strips of Parmesan shaved from the chunk of cheese with a vegetable peeler or with the grated Parmesan. Sprinkle the remaining 1/4 teaspoon pepper over the salads.