Cook pasta according to package directions. Meanwhile, in a large skillet, cook the beef, green pepper and onion over medium heat until meat is no longer pink; drain. Stir in the spaghetti sauce, soup, Italian seasoning and pepper.
Drain pasta, Add pasta and 1-1/2 cups cheese to beef mixture. Transfer to two greased 11-in. x 7-in. baking dishes. Sprinkle with remaining cheese.
Cover and freeze one casserole for up to 3 months. Cover and bake the remaining casserole at 350° for 20 minutes. Uncover; bake 5-10 minutes longer or until bubbly and cheese is melted.
To use frozen casserole: Thaw in the refrigerator overnight. Remove from the refrigerator 30 minutes before baking. Cover and bake at 350° for 50-60 minutes or until heated through and cheese is melted.