Enjoy the rich aroma and spicy kick of this traditional Lamb Shank Rogan Josh Indian curry, effortlessly cooked in your slow cooker using lamb shanks, tomatoes, onions, garlic, and ginger. To make Lamb Shank Rogan Josh in your slow cooker or crockpot, simply rub the lamb with a blend of garlic, ginger, and spices, lay it over onions, and let it cook on low for about 8 hours until it’s irresistibly tender.