PREPARE pasta according to package directions; drain, reserving 1/4 cup cooking water.
PLACE pasta and reserved water in large bowl; add pesto and tomatoes. Toss to coat. Season with salt and pepper. Add arugula and cheese; toss gently. Top with pine nuts.
Cook’s Tip: 2 packages (9 ounces each) BUITONI Refrigerated Three Cheese Tortellini can be used in place of Chicken & Roasted Garlic Tortelloni.