Serve lamb shanks with couscous, either whole wheat or regular. Couscous is so easy, and it only takes about five minutes to make. There's plenty of sauce for both the meat and the couscous. Lamb shanks are wonderful with rice or quinoa, too, or try them with mashed potatoes (make them in your Instant Pot!) or easy baked potatoes. They go great with creamy homemade polenta, too.