Place the lamb shoulder chunks, onion, garlic, and ginger into the slow cooker.
Add the Thai red curry paste, coconut milk, bamboo shoots, carrots, fish sauce, and brown sugar. Stir to combine everything evenly.
Cover and cook on low for 7 to 8 hours, until the lamb is very tender.
Stir in the lime juice right before serving.
Spoon the stew over cooked rice and top with chopped cilantro.