Butterflied Leg of Lamb with Lemon and Garlic Marinade

Place lamb on a clean work surface, and cover with plastic wrap. Using a mallet, pound lamb to 1 inch thick. Transfer to a large shallow bowl, and set aside.

Zest and juice both lemons, and combine in a small bowl. Add olive oil, oregano, and garlic; whisk to combine. Pour lemon mixture over lamb, and rub with your hands to coat evenly and thoroughly. Cover bowl with plastic wrap, and place in refrigerator; let marinate for at least 6 hours or overnight, turning the lamb occasionally. Remove from refrigerator 1 hour before serving, and let lamb come to room temperature.

Heat grill or grill pan to medium high. Remove lamb from marinade, and place on a large baking sheet; season all over with salt and pepper. Using four long skewers, secure lamb on each side, with two skewers at the short ends and the other two running lengthwise, each 2 to 3 inches from the edge of the lamb. Transfer to grill, and cook until lamb is browned on the outside and still slightly pink on the inside, 7 to 9 minutes on each side for medium rare. Transfer to a platter, and let rest for 10 minutes.

When ready to serve, remove skewers, and thinly slice lamb against the grain. Garnish with lemon wedges, oregano, and slices of grilled red onion.