Bring a large pot of lightly salted water to a boil. Add macaroni and cook for 8 to 10 minutes or until al dente; drain.
In a large saucepan brown the beef mince with the onion, green capsicum and mushrooms; drain. Add corn, peas, diced tomatoes, crushed tomatoes, tomato paste, tomato pasta sauce and water. Stir and bring to boil over medium heat. Mix in garlic, parmesan cheese, parsley, salt, pepper and sugar then simmer for 20 to 25 minutes.
Mix together cooked macaroni and meat sauce. Serve hot or refrigerate for later.