PREPARATION:
- Cook pasta according to package directions, omitting salt. Drain; set aside.
- Meanwhile, fill medium saucepan with water. Add salt and 1/4 teaspoon pepper. Bring to a boil over high heat; add chicken. Reduce heat to medium; simmer, covered, about 30 minutes or until chicken is tender and no longer pink in center. Remove chicken from saucepan. Cool slightly; shred.
- Preheat oven to 350°F. Spray 11X7-inch baking pan with nonstick cooking spray; set aside. Combine spinach, cottage cheese, blue cheese, garlic, remaining 1/4 teaspoon pepper and chicken in large bowl. Pour half the spaghetti sauce into bottom of prepared pan. Fill manicotti with chicken mixture; place in sauce in pan. Top with remaining spaghetti sauce. Bake, covered, 20 minutes or until heated through.
