Preheat oven to 350ºF. Lightly spray 9x13-inch pan with cooking spray.
Prepare pasta according to package directions; drain and return to pot.
Stir together all ingredients except mozzarella cheese. Spread mixture into a lightly greased 13- x 9-inch baking dish. Sprinkle evenly with mozzarella cheese.
Bake uncovered for 30 minutes or until bubbly.
