This is a forgiving and crowd-pleasing appetizer that you can easily modify by using different seasonal toppings. You can prepare the polenta up to 2 days in advance, and the tapenade up to 3 days. On the day of your party, simply broil the polenta squares and top them with the tapenade.
Leg of lamb is slowly braised with garlic, rosemary, onions, and vegetables until it is tender, moist, flavorful and falling off the bone. A white wine and broth sauce is leftover from the cooking process that tastes divine when spooned