Preheat your pellet smoker to 225°F.
Prepare lamb shanks by trimming excess fat and silver skin, and removing the membrane
Coat the lamb shanks with olive oil, salt, black pepper, and garlic powder.
Place the lamb shanks on the pellet smoker and smoke for 2 hours, uninterrupted
Prepare a braising liquid by combining beef broth, red wine, chopped onion, and chopped carrots.
After 2 hours, remove the shanks from the smoker and place them in an aluminum pan. Pour the braising liquid over them and wrap them tightly in aluminum foil.
Smoke until the meat's internal temperature reaches 195°F, this should take another 2 hours.
Remove shanks from the smoker and let them rest in the foil for 20-30 minutes before serving