Wash the zucchini and grate them on a coarse grater. Sauté chopped onion and the green onion in a large pan. After a while, add the chopped dried tomatoes, crushed garlic, and grated zucchini (minus the zucchini juice). Roast for about 10 minutes. At the end, add soy sauce, ketchup, mustard, season with salt and pepper and cook for another minute.