Skip to content
Roast lamb with mint pesto sauce recipe

Roast lamb with mint pesto sauce recipe

5 ratings

This mouthwatering roast leg of lamb with a fresh and fragrant mint and pesto sauce is perfect for Easter lunch or a Sunday roast to feed a crowd. See method

  • Serves 6
  • 10 mins to prepare and 1 hr 35 mins to cook, 45 mins to cool
  • 545 calories / serving


  • 2kg whole leg lamb joint
  • 3 cloves of garlic, thickly sliced
  • 2-3 sprigs rosemary
  • Olive oil for drizzling
  • 1 onion, cut into chunks
  • 2 carrots, cut into chunks

For the pea and mint pesto

  • 200g frozen peas
  • 1 small bunch mint, leaves only
  • 1 tbsp capers, rinsed
  • 12 blanched almonds, toasted and roughly chopped
  • 1 small clove garlic, crushed
  • ½ lemon, juiced
  • 2½ tbsp olive oil

Each serving contains

  • Energy

  • Fat

    42g 60%
  • Saturates

    17g 85%
  • Sugars

    5g 6%
  • Salt

    0.1g <1%

of the reference intake
Carbohydrate 8.7g Protein 34.4g Fibre 3.9g


  1. Using the point of a sharp knife make small incisions all over the lamb, then poke a slice of garlic into each hole. Cut the rosemary into smaller sprigs and push them into the incisions too. Cover and chill for at least 2 hours, preferably overnight.
  2. Take the lamb out of the fridge 1hr before roasting to allow to come to room temperature. Heat oven togas 7, 220°C, fan 200°C. Place the chopped onion and carrot in a large roasting tin, then sit the lamb on top, season well and drizzle over the oil. Roast for 15 mins, then turn down to gas 5, 190°C, fan 170°Cand roast for a further 1hr 20 mins. Remove the lamb, cover lightly with foil and leave to rest in a warm place for 30-45 mins. (Now’s the time to pop your potatoes in the oven).
  3. Meanwhile make the pesto sauce. Boil the kettle and pour over the peas, leave to stand for 1-2 mins. Drain the peas, then run under cold water. Once cool transfer to the small bowl of a food processor. Add the remaining ingredients and blend to a smooth paste. Season and transfer to a serving dish.
  4. Strain any lamb juices from the roasting tray into a small saucepan. Add any resting juices and heat through. Slice the lamb and serve with the roasting juices and pea and mint sauce.

See more Lamb recipes

For top tips on protecting you and your family when preparing raw meat and poultry, visit Food Safety in the Home.

You may also like

Be the first to comment

Before you comment please read our community guidelines.