Cook pasta according to package directions. Meanwhile, in a large skillet, saute onions in oil until tender. Stir in tomatoes, bacon, basil and pepper; cook and stir until tomatoes are softened. Rinse and drain pasta; Stir into tomato mixture. Add half of the cheese. Transfer to a 1 1/2 qt. baking dish coated with nonstick cooking spray. Sprinkle with the remaining cheese. Bake uncovered, at 375 degrees for 8-10 min. or until cheese is melted