1/2 cup KRAFT Shredded Mozzarella Cheese, divided
1/4 cup CLASSICO Traditional Basil Pesto Sauce and Spread
1/4 cup GREY POUPON Dijon Mustard
4 small boneless skinless chicken breasts (1 lb.)
Heat oven to 350F. Mix 1/4 cup cheese, pesto and mustard until blended. Place chicken in 13x9-inch baking dish; top with pesto mixture and remaining cheese. Bake 20 to 25 min. or until chicken is done (165F).