06In a small bowl stir together chopped garlic, oregano, coarse salt, freshly ground pepper, and remaining 2 teaspoons olive oil and rub all over lamb.07Remove pan from oven and stir vegetables. Arrange lamb over vegetables, rib sides down, and roast 20 minutes, or until a meat thermometer inserted in fleshy section registers 130°F. for medium-rare.08Remove 8 garlic cloves from pan and squeeze garlic out of skins into a blender. Add broth and blend until smooth. Transfer remaining vegetables and lamb to a heated platter, reserving juices in pan, and let rest, covered loosely, 10 minutes.09To pan add garlic broth and salt and pepper to taste and on top of stove deglaze over moderately high heat, scraping up brown bits. Boil sauce until thickened slightly and transfer to a sauceboat.10Cut lamb racks in half or into individual chops and serve with vegetables and sauce.