New Zealand Lamb Rack with Rosemary, Garlic, and Kumara Mash
A sophisticated yet comforting dish featuring a succulent rack of lamb, infused with rosemary and garlic, served alongside a creamy, sweet kumara (sweet potato) mash.

๐ง Ingredients
- 1 kg Rack of lamb(frenched)
- 2 sprigs Fresh rosemary(chopped)
- 4 cloves Garlic(minced)
- 2 tbsp Olive oil
- 1 tsp Salt
- 0.5 tsp Black pepper
- 1 kg Kumara (sweet potato)(peeled and cubed)
- 50 g Butter
- 100 ml Milk(warm)
๐จโ๐ณ Instructions
- 1
Preheat oven to 200ยฐC (180ยฐC fan/400ยฐF/Gas Mark 6).
๐ก Tip: Allow the oven to fully preheat before placing the lamb. - 2
In a small bowl, mix chopped rosemary, minced garlic, olive oil, salt, and pepper. Rub this mixture all over the rack of lamb.
๐ก Tip: Ensure an even coating for maximum flavor. - 3
Sear the lamb rack in a hot, oven-safe pan for 2-3 minutes per side until browned.
๐ก Tip: This step creates a flavorful crust. - 4
Transfer the pan to the preheated oven and roast for 15-20 minutes for medium-rare, or until desired doneness.
๐ก Tip: Use a meat thermometer: 55ยฐC (130ยฐF) for medium-rare, 60ยฐC (140ยฐF) for medium. - 5
While the lamb is roasting, boil the cubed kumara in salted water until tender, about 15-20 minutes.
๐ก Tip: Drain the kumara thoroughly. - 6
Mash the cooked kumara with butter and warm milk until smooth and creamy. Season with salt and pepper to taste.
๐ก Tip: Add more milk if a thinner mash is desired. - 7
Once the lamb is cooked, remove it from the oven and let it rest for 10 minutes before carving.
๐ก Tip: Resting allows the juices to redistribute, resulting in a more tender lamb. - 8
Serve slices of the rested lamb rack with a generous portion of kumara mash.
๐ก Pro Tips
- โFrenched lamb racks look more impressive and are easier to carve.
- โDon't overcook the lamb; it should be pink and juicy.
- โKumara mash can be made ahead and reheated gently.
โจ Twist Ideas
Inspiration for your own version of this recipe
- Add a splash of red wine to the pan after searing the lamb and reduce to make a simple pan sauce.
- Incorporate a pinch of nutmeg into the kumara mash for added warmth.
- Serve with steamed green beans or asparagus for a complete meal.