Garlic & herb roast lamb on boulangère potatoes

Garlic & herb roast lamb on boulangère potatoes

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(14 ratings)


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Cooking time

Prep: 30 mins Cook: 1 hr, 45 mins

Skill level



Serves 8

Cooking succulent lamb and herby potatoes together means the potatoes absorb all the lovely juices

Nutrition and extra info

Nutrition info

Nutrition per serving



  • 2kg leg of lamb
  • 4 garlic cloves, sliced
  • few rosemary sprigs
  • few thyme sprigs
  • 2kg large potatoes, such as King Edwards
  • 2 onions, thinly sliced
  • 600ml chicken stock
  • 50g butter

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  1. Heat oven to 190C/170C fan/gas 5. Cut small pockets into the skin and flesh of the lamb by piercing it with the point of a sharp knife. Stuff each pocket with a slice of garlic and a few leaves of rosemary, or scatter with thyme. Put in a roasting tin, season well with salt and freshly ground black pepper, then cover with foil.
  2. Peel and thinly slice the potatoes, rinse under the cold tap and pile into a large ovenproof dish or roasting tin. Toss with the onions, remaining slices of garlic and a good scattering of herbs.
  3. Heat the stock and butter together, then pour over the potatoes. Cover the dish with foil and bake in the oven with the lamb for 1 hr. Uncover, put the lamb on top of the potatoes and roast uncovered for 45 mins more. Allow the lamb to rest before carving, for about 15 mins. Leave the potatoes in the oven (covered, if starting to brown too much) until ready to serve.

Recipe from Good Food magazine, April 2011

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ltyler's picture
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I made the gravy with the lamb juices, beef stock, red wine and cornflour.

ltyler's picture
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I cooked this today for Easter Sunday dinner here in New Zealand. All I can say is WOW this was the perfect recipe for Lamb and as an Irish girl the potatos were sublime, the lamb was melt in your mouth. I served it with carrots glazed with thyme, cabbage and broccoli. Thanks Sara for a fab, easy recipe with guaranteed results!!

wendbrad68's picture

tried this recipe after I seen Ainsley Harriot do it on the Alan titchmarsh show , its great timings are correct but if doubt do a little more remember lamb should be pinky

gladius's picture

Yes, it does seem a rather short cooking time to me even for lamb. I re-read the recipe thinking that perhaps I had misread it but no. Can we have a little more info please because I particularly enjoy lamb.

kristinagoodfood's picture

really? a 2kg leg of lamb at 190 for just 1 hr 45? doesn't seem long enough. Also putting both in the oven at the same time, at what heights in the oven? More info is needed!