1. Cook first 5 ingredients in a Dutch oven, stirring until meat crumbles; drain well, and return to Dutch oven. Stir in soup and next 5 ingredients. Bring to a boil over medium heat. Cover, reduce heat, and simmer 1 hour, stirring occasionally.
2. Preheat oven to 325°.
3. Cook spaghetti according to package directions, omitting salt and fat; drain.
4. Stir spaghetti, cheese cubes, and olives into meat sauce. Spoon mixture into a 13 x 9-inch baking dish coated with cooking spray. Cover and bake at 325° for 20 minutes or until thoroughly heated. Sprinkle with 1/2 cup shredded cheese, and bake, uncovered, 10 additional minutes.