Cook linguine to desired doneness as directed on package. Drain.
Meanwhile, heat oven to 350°F. Spray 8-inch square (2-quart) glass baking dish with nonstick cooking spray.
In large bowl, combine cooked linguine and all remaining casserole ingredients; stir gently to mix. Spoon into sprayed baking dish.
In small bowl, combine topping ingredients; mix well. Sprinkle evenly over top. Cover with foil.
Bake at 350°F. for 35 minutes or until bubbly. Uncover; bake an additional 10 minutes or until topping is browned.