1. Heat the oven to 350°.
2. Season the lamb all over with salt and pepper.
3. Place a wide shallow braising pan with a lid (the Staub braiser is ideal) over medium-high heat and add about 2 tbsp. oil. When the pan is hot, add the lamb in batches and sear until browned all over. Set aside to a plate. Lower the heat to medium and add the onion, za’atar, cinnamon sticks, 7-spice mix, and remaining oil and sauté gently for a few minutes until the onions have softened.
4. Add the lamb back to the pan and cover with the tomatoes, stock, and date syrup. Season with more salt and pepper and add in the bay leaves. Cover with a lid and bake in the oven for 1.5 hours, until the lamb is very tender.
5. Remove the cinnamon sticks and bay leaves, add the orzo, and stir well. Cover and return the pan to the oven to continue to cook for a further 25 minutes, checking once halfway through cooking time to make sure there is enough liquid in the pan.
6. Adjust the seasonings to taste, sprinkle the feta and oregano over top, and serve.

*Za’atar is a Middle Eastern spice blend that has many variations. Most commonly it is a mixture of oregano or thyme with cumin, coriander, sumac, and sesame seeds.
**Lebanese 7-spice mix is a spice blend consisting of cinnamon, nutmeg, ginger, fenugreek, allspice, pepper, and cloves.