1In 10-inch skillet, heat 2 tablespoons of the oil over medium heat. Add onion and red pepper flakes; cook 5 minutes, stirring frequently, until onion is tender. Add tomatoes, garlic and salt. Heat to boiling. Reduce heat; simmer uncovered 3 minutes, stirring occasionally.
2Meanwhile, cook pasta as directed on package. Drain; place in serving bowl. Pour tomato mixture over pasta; toss gently to coat. Add basil, cheese and remaining 1 tablespoon oil; toss.