A rub of crushed dried porcini mushrooms and finely chopped rosemary creates an umami-rich crust for lamb. I use a food processor to blitz the mushrooms before continuing to chop them by hand with the rosemary, resulting in a coarse rub. A spice grinder will create a finer crust.
Porcini and Rosemary Crusted Lamb Loin Chops
8 lamb loin chops, about 1 inch thick
Freshly ground black pepper
3 tablespoons olive oil, divided
1 large garlic clove, minced
1/4 cup finely ground dried porcini mushrooms
1 tablespoon finely chopped rosemary leaves
Season the lamb with salt and pepper. Combine 2 tablespoons oil and the garlic in a bowl. Smear all over the lamb. Cover with plastic wrap and refrigerate at least 2 hours or up to 24 hours.
Thirty minutes before roasting, remove the lamb from the refrigerator. Combine the mushrooms and rosemary in a small bowl. Coat both sides of the lamb with the rub. Let stand at room temperature, 30 minutes.
Preheat the oven to 375 F (190 C). Heat 1 tablespoon oil over medium-high heat in a large ovenproof skillet. Add the lamb without overcrowding. Cook until brown on both sides, 3 to 4 minutes per side. Transfer the skillet to oven. Bake until cooked to desired doneness, 10 to 15 minutes for medium-rare. Remove from oven, tent with foil and let rest 15 minutes before serving.