COOK pasta as directed on package, omitting salt.
MEANWHILE, heat dressing in large nonstick skillet on medium-high heat. Add onions and garlic; cook and stir 2 min. Add tomatoes; cook 5 min. or until heated through, stirring occasionally.
DRAIN pasta. Add to tomato mixture; toss to coat. Sprinkle with cheese and basil.
serving size = 2 cups (500 mL)