1In 12-inch skillet, cook beef over medium-high heat 5 to 7 minutes; stirring occasionally, until thoroughly cooked. Add pepperoni; cook and stir 1 minute. Drain.
2Stir in soup, water, uncooked spaghetti, Italian seasoning and garlic salt; heat to boiling. Stir; reduce heat to medium-low. Cover; cook about 18 minutes, stirring occasionally, until spaghetti is desired doneness.
3Sprinkle with cheese, tomato and olives. Remove from heat. Cover; let stand 3 to 5 minutes or until cheese is melted.