Preheat your oven to 325°F (160°C).
In a small bowl, mix together the minced garlic, cumin, paprika, coriander, turmeric, ginger, cinnamon, salt, pepper, lemon juice, and olive oil to make a marinade.
Place the leg of lamb in a roasting pan and rub the marinade all over the lamb, making sure it's evenly coated.
Cover the lamb with foil and let it marinate in the refrigerator for at least 2 hours, or overnight for best results.
Remove the lamb from the refrigerator and let it come to room temperature before cooking.
Roast the lamb in the preheated oven for about 2-3 hours, or until it reaches your desired level of doneness. You can use a meat thermometer to check for doneness (145°F/63°C for medium-rare, 160°F/71°C for medium).
Once cooked, let the lamb rest for about 10-15 minutes before slicing.
Garnish with chopped parsley and serve hot.
Enjoy!
