Brown the ground beef, onion, garlic and seasoning in oil. Drain.

While the beef is browning, cook the pasta according to the package directions.

Stir in the pasta, spaghetti sauce and 3 cups cheese. Place the mixture in 2 greased 9x13x2 inch baking pans or 4 square pans. Sprinkle with the remaining mozzarella. Top with pepperoni.

Cover and freeze up to 3 months.

To cook now: Bake uncovered at 350 degrees for 25-30 minutes, until heated through.

To bake frozen casserole: Thaw in refrigerator overnight and bake at 350 for 35-40 minutes, till hot.