Wash the zucchini blossoms gently and drain them. In a small bowl, combine the rice, parsley, mint, and onion. Add the oil, tomato, and salt and pepper and mix well. Using a small teaspoon, stuff the blossoms with the rice mixture. Arrange them one next to the other in a shallow saucepan, add warm water, and cover. Bring to a boil and simmer over low heat until the rice is cooked, about 30 minutes. Serve warm. Sofi Lazarides Konstantinides, "Sofi's Aegean Kitchen"