How to Make It
Preheat the oven to 450°. Melt the 3 tablespoons of butter in a large ovenproof skillet. Season the lamb loins with salt and pepper and dredge in the flour. Add to the skillet and cook over moderately high heat, turning, until browned all over, about 6 minutes. Let the lamb cool slightly, then pat dry and brush with the mustard.
On a plate, mix the bread crumbs with the parsley, garlic, shallot, oregano, basil, Parmesan and the melted butter. Roll the lamb in the crumb mixture, pressing it into the meat.
Return the lamb to the skillet and roast for about 15 minutes for medium-rare meat. Transfer to a work surface, cover loosely with foil and let stand for 5 minutes. Slice the lamb loins 1/3 inch thick and serve.