Instructions: Puree first 5 ingredients in processor until almost smooth. Season with salt and pepper. (Can be made 1 day ahead. Transfer to small bowl. Press plastic wrap directly onto surface of pesto to seal. Cover; chill.)

Cook tortellini in large pot of boiling salted water until just tender but still firm to bite. Drain, reserving 1/4 cup cooking water.

Combine tortellini, chicken and 1 cup pesto in heavy large skillet over medium heat. Toss until mixture is heated through, adding reserved cooking water and additional pesto by tablespoonfuls until sauce coats pasta.

Season to taste with salt and pepper. Transfer to bowl. Pass additional Parmesan.

Serves 4.

If you would like to email yourself the recipe for later use, or share the recipe with your friends or family, enter the email addresses below and this recipe will be emailed to you and others as well.