Herb-crusted rack of lamb with summer mint sauce

This elegant roast rack of lamb features a vibrant green herb crust that crackles beautifully when sliced. Tender, medium-rare lamb cutlets rest on buttery summer vegetables including peas, broad beans, and baby carrots. A refreshing mint sauce completes this healthy, pregnancy-friendly dish that showcases British seasonal produce at its finest.

Prep: less than 30 mins

Cook: 30 to 45 mins

Serves: Serves 3

Dietary: Healthy, Nut-free, Pregnancy-friendly

By Elliott Grover
From Saturday Kitchen Recipes

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This herb-crusted rack of lamb recipe achieves a Nutri-Score C rating, balancing high-quality protein from lamb with nutrient-rich vegetables and fresh herbs. The mint sauce adds flavour without excessive calories, while the herb crust provides vitamins from chervil, parsley, chives, and mint.

Per serving: approximately 425 kcal, 24g fat, 18g carbs, 8g sugars, 5g fibre, 32g protein.

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Equipment

• Food processor →
• Ovenproof frying pan →
• Small saucepan
• Knife
• Chopping board
• Bowl
• Brush
• Measuring spoons
• Carving board
• Plates

Method

1. Make the mint sauce (10 minutes, plus cooling)
   Place the water, white wine vinegar, and caster sugar in a small saucepan and bring everything to the boil. Stir continuously until the sugar dissolves completely, then remove from the heat and allow to cool fully. Once cold, stir in the finely chopped fresh mint and set your mint sauce aside. Making this ahead gives the flavours time to develop beautifully.
2. Prepare the herb crumb (5 minutes)
   Pop the fresh chervil, parsley, chives, and mint into your food processor and blend for about 20 seconds until finely chopped. Add the torn white bread pieces and blend again until you achieve fine, bright green breadcrumbs. This vibrant herb crumb is what gives this herb-crusted rack of lamb its stunning appearance and fresh flavour.
3. Preheat the oven and prepare the lamb (5 minutes)
   Set your oven to 180C/160C Fan/Gas 4. Score the fat on the rack of lamb in a crosshatch pattern, then season generously with salt and freshly ground black pepper. Scoring helps the fat render properly during cooking, creating that lovely crispy texture on your roast rack of lamb.
4. Render and colour the lamb (8-10 minutes)
   Place the lamb fat-side down in a cold ovenproof frying pan, then turn the heat to medium. Cook gently until the fat renders down and turns golden and crisp – this takes patience but creates incredible flavour. Turn the lamb and colour the remaining sides evenly. This step is crucial for achieving restaurant-quality results with your herb-crusted lamb.
5. Apply the mustard and herb crust (3 minutes)
   Brush the rendered fat surface with Tewkesbury mustard or Dijon mustard, ensuring even coverage. Press the bright green herb crumb firmly onto the mustard-coated surface, creating an even 2-3cm (¾-1¼ inch) crust. Press down well so the herb crust adheres properly during roasting.
6. Roast the lamb (14-16 minutes)
   Transfer the pan to the preheated oven and roast for 14-16 minutes for medium-rare lamb, or adjust timing to your preference. Use a meat thermometer if you have one – 52-54C indicates perfect medium-rare for this rack of lamb recipe. The herb crust should look vibrant and slightly crisp when ready.
7. Rest the lamb (8-10 minutes)
   Remove the herb-crusted rack of lamb from the oven and transfer to a carving board. Allow it to rest for 8-10 minutes before carving – this essential step lets the juices redistribute throughout the meat, ensuring every cutlet stays succulent. You can warm your vegetables during this resting time.
8. Prepare the vegetables (5 minutes)
   Melt the butter in a frying pan over gentle heat. Add the cooked peas, double-podded broad beans, shredded baby gem lettuce, and cooked baby carrots. Warm everything gently until heated through, being careful not to overcook the vegetables. Season with salt and pepper to taste, then fold through the fresh pea shoots just before serving for extra colour and nutrition.
9. Plate and serve (2 minutes)
   Spoon the warm buttery vegetables into the centre of each plate, creating a lovely colourful base. Carve the rested rack of lamb into individual cutlets and arrange them on top of the vegetables. Serve immediately with the refreshing mint sauce alongside. This healthy lamb dish is perfect for special occasions or impressive weekend dining.

Recipe tips

• Ask your butcher to French-trim the rack of lamb for you to save time and ensure professional presentation
• Don’t skip the resting time for your roast rack of lamb – it makes a noticeable difference to tenderness
• The mint sauce can be made up to 2 days ahead and stored covered in the fridge for convenient meal planning
• For best results with this herb-crusted lamb recipe, use the freshest herbs you can find for maximum flavour and colour
• This pregnancy-friendly lamb dish is ideal for special dinners – just ensure the lamb reaches your preferred doneness safely
• Double-pod broad beans by removing them from their outer grey skin for the best texture in your healthy lamb recipe