1Heat oven to 350°F. Spray 3-quart casserole with cooking spray.
2In small saucepan, heat cream to simmering. Meanwhile, in large bowl, toss ravioli, tomatoes, spinach and pesto. Pour warm cream over mixture and toss to coat. Spoon into casserole. Sprinkle with cheese.
3Bake uncovered 15 minutes or until thoroughly heated and cheese is melted.