1 package (16 ounces) rigatoni or large tube pasta
1-1/2 pounds ground beef
1 small onion, chopped
4 cups shredded part-skim mozzarella cheese
2 cans (15 ounces each) pizza sauce
1 can (10-3/4 ounces) condensed cream of mushroom soup, undiluted
1 package (8 ounces) sliced pepperoni
Chopped fresh basil or arugula, optional
Cook pasta according to package directions. Meanwhile, in a skillet, cook beef and onion over medium heat until meat is no longer pink; drain.
Drain pasta; place in a 5-qt. slow cooker. Stir in the beef mixture, cheese, pizza sauce, soup and pepperoni. Cover and cook on low for 2-3 hours or until heated through. If desired, top with basil before serving.