Preheat the oven to 220°C.
Trim the fat layer off the lamb rack. Rub the rack with a little oil and season with salt and pepper.
Heat a frying pan until hot, then sear the lamb for a few minutes each side to brown (or if you leave the fat layer on, cook this side longer to render out some of the fat and crisp it up nicely).
Transfer the lamb to a roasting dish and bake in the oven for 12-16 minutes depending on how you like it done.
Remove from the oven, cover loosely with foil and leave to rest for 10-15 minutes before carving across the grain.

PREPARE ROSTI
Squeeze as much liquid out of the grated potato as you can – the more the better.
Combine the potato, rosemary and melted butter in a bowl and season with salt and pepper. Press down into 5-6 patties about 2cm thick.
Heat oil over a medium-high heat and fry the rosti until golden brown on both sides, about 5-7 minutes.
Transfer to the middle of the oven for 15-20 minutes to finish cooking while the lamb rests.

PREPARE PISTOU
Combine all ingredients and mix in food processor until blended into a paste.

TO SERVE
Slice the lamb rack into 1 or 2 bone cutlets, drizzle with a little pistou and serve with the rostand a salad or vegetables.

Recipe from recipes.co.nz