Heat oven to 400 degrees F. Line a baking sheet with nonstick foil.
In a large bowl, blend turkey, cornflakes, eggs, Italian seasoning, salt and pepper. Shape into 12 meatballs,1/4 cup each.
Transfer to prepared baking sheet; bake at 400 degrees F for 15 minutes. Turn and bake an additional 15 minutes. Meanwhile, cook pasta in boiling water for 1 minute less than package directions (about 5 minutes). Drain.
Coat a 13 x 9 x 2-inch baking dish with nonstick cooking spray; add pasta. Toss with the meatballs, marinara and 1 cup of the cheese. Scatter remaining 1/2 cup cheese over dish. Bake at 400 degrees F, uncovered, for 25 minutes or until bubbly. Let stand 10 minutes before serving.