Are lamb ribs tough?

Lamb ribs can definitely be tough if they aren't cooked properly. Because the ribs are a naturally tougher cut of meat, it's best to cook them for a long time on a relatively lower temperature so the meat tenderizes. For instance, you could season up some lamb ribs the way you like them and then bake them in a preheated oven at 325 °F (163 °C) for 1 hour. Then, turn the ribs over with a pair of metal tongs, and bake them for another 30 minutes so they're so tender they fall off the bone. Basically, the key to lamb ribs to be patient and give them enough time to cook until they're tender.