Baked Penne

1/2 lb. extra-lean ground beef or Italian Sausage
1/2 cup chopped onions 
1/2 cup green peppers (I left this out b/c I don't like green peppers)
1 jar(24 oz.) spaghetti sauce
1 tub(10 oz.) PHILADELPHIA Italian Cheese and Herb Cooking Creme, divided
1 cup KRAFT Shredded Mozzarella Cheese, divided
3 cupscooked penne pasta

Heat oven to 350°F. 

Brown meat with vegetables in large nonstick skillet. Stir in spaghetti sauce, 3/4 cup cooking creme and 1/2 cup mozzarella; cook and stir 2 to 3 min. or until mozzarella is melted. Add pasta; mix lightly. Spoon into 2-qt. casserole; top with remaining cooking creme and mozzarella. Cover. Bake 20 min. or until heated through, uncovering after 15 min.