Instructions

  1. Heat oil in a medium heavy saucepan and cook onion and garlic just until tender.
  2. Add tomatoes, oregano, salt and pepper to taste and simmer over low hear for about ten minutes, or until blended and hot.
  3. Add the tuna, olives and capers, if desired, simmer a little longer to thicken sauce.
  4. Meanwhile, cook spaghetti in a large pot of boiling, salted water until al dente or just until tender.
  5. Drain and combine with hot tuna-tomato sauce and serve with sprinkled cheese.