tagine of Lamb with zucchini

In the pot covered with 3/4, mix and cook over medium heat for 1 hour:

1 kg 500 pieces of meat, 1 cup oil, 2 chopped onions, 1 teaspoon pepper 1/2 teaspoon salt, 1/2 packet of saffron, 1 1/2 liters of water

After this time, add 1 kg of small zucchini, cut into 2 in length and 300 g. small onions.
Can be replaced by large onions, cut into thin slices. Still leave 15 to 20 minutes then sprinkle over a handful of thyme rubbed between the palms.
In a tagine or a round dish, present meat or medium zucchini, onions and cover with sauce.