Pasta with creamy pumpkin sauce

What You Need
1 pkg. (16 oz.) penne pasta, uncooked
1 pkg. (8 oz.) PHILADELPHIA Cream Cheese, cubed
1/2 cup KRAFT Grated Parmesan Cheese
1/2 cup (1 stick) butter or margarine
1/2 cup milk
1 cup canned pumpkin
1/2 tsp. ground red pepper
ground nutmeg to taste
COOK pasta as directed on package.
MEANWHILE, place cream cheese, Parmesan cheese, butter and milk in large saucepan; cook on low heat until cream cheese is melted, stirring frequently. Add pumpkin and spices; cook until heated through, stirring occasionally.
ADD pasta; toss lightly. Serve topped with additional Parmesan cheese, if desired.