Greek-Style Leg of Lamb

Ingredients

1. 1/4 cup extra-virgin olive oil
2. 1/2 onion, coarsely chopped
3. 1 garlic clove
4. 2 dill sprigs
5. 2 tablespoons fresh lemon juice
6. 1 teaspoon finely grated lemon zest
7. 1/2 teaspoon dried oregano
8. 2 pounds boneless leg of lamb, in one piece
9. Salt and freshly ground pepper

1. In a blender, puree the oil, onion, garlic, dill, lemon juice, zest and oregano. In a baking dish, pour the marinade over the lamb and turn to coat. Refrigerate for at least 4 hours. Remove from the refrigerator 1 hour before cooking. Light a grill. Scrape off the marinade and season the lamb with salt and pepper. Grill over moderate heat for 28 minutes, turning once, until medium-rare. Transfer to a surface and let rest for 10 minutes. Slice the lamb against the grain and serve.