Boil water, then add to pot with heat set to high. Add spaghetti. Add chopped tomato, mushrooms and seasonings to tomato sauce and heat on low in separate pot, covered with a lid. Once water comes to a boil in the pot, cook spaghetti for at least 10 minutes. Occasionally stir sauce. Drain pasta, add sauce, then capers. Add cheese if you want. Enjoy!