Lamb steaks with rosemary sweet potatoes

Lamb steaks with rosemary sweet potatoes

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(61 ratings)

Prep: 10 mins Cook: 30 mins


This is great to have up your sleeve, impressive enough for a dinner party and quick enough for after work

Nutrition and extra info

  • Easily halved

Nutrition: per serving

  • kcal431
  • fat24g
  • saturates9g
  • carbs27g
  • sugars9g
  • fibre4g
  • protein29g
  • salt0.63g
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  • 2 tbsp olive oil
    olive oil

    Olive oil

    ol-iv oyl

    Probably the most widely-used oil in cooking, olive oil is pressed from fresh olives. It's…

  • 4 lamb leg steaks



    A lamb is a sheep that is under 1 year old; between 1 and 2 years old you will find it sold as…

  • 3 sweet potatoes, finely sliced
    Sweet potatoes

    Sweet potato

    sweet po-tate-toe

    Sweet potatoes have a creamy texture and a sweet-spicy flavour that makes them ideal for savoury…

  • 1 red onion, halved & sliced
  • sprig fresh rosemary or 1 tsp of dried



    Rosemary's intense, fragrant aroma has traditionally been paired with lamb, chicken and game…

  • 2 tbsp wholegrain mustard


  1. Heat oven to 220C/fan 200C/gas 7. Heat half the oil in a roasting tray, then brown the steaks on both sides and set aside. Toss the potato, onion, remaining oil and half the rosemary into the roasting tray, then lay the steaks on top. Brush the steaks with the mustard, scatter with remaining rosemary and roast everything for 20 mins until the potatoes are softened and the lamb cooked.

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Comments, questions and tips

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Alex Ashton's picture
Alex Ashton
3rd May, 2019
The recipe doesn’t work, potatoes don’t cook lamb is dry and whole meal is bland and oiley When you read all the good reviews they only rate it well because they have greatly changed the recipe, people shouldn’t rate on the changes they have made but rate it on the recipe itself, it gives a bad reflection to those of us who don’t have time to read through all the comments.
19th Feb, 2018
Tried this tonight with a couple of alterations. Cooked for 2, so only used one sweet potato, but added some courgette, peppers and garlic to round it out as a meal. Also cooked the veg on it’s own for 10 as other as others suggested, then popped the steaks on top for the last 10. Was absolutely lovely! Will be going in to my family dinners list!
18th Feb, 2018
Tried this one for the first time yesterday following the recipe. Unfortunately the lamb steaks were well done but most of the sweet potato (sliced incredibly thin) hadn't crisped. Next time I will add the lamb a little after the sweet potato.
20th Jan, 2018
So easy, so tasty. Agree potatoes need to be sliced very thinly. Will be repeating....very soon!
20th Jul, 2017
Quick, easy, and bland. There is a bit too much oil involved so the veg taste, well, oily. There is not much excitement with the veg either. The rosemary adds a little tang and of course goes well with the lamb, but seems a bit lonely in this dish. A bit of garlic and paprika might be worth considering.
8th Jan, 2017
Delicious. Cut the sweet potatoes VERY thin and they cooked beautifully.
11th Nov, 2015
Made this as stated, used a mandolin to slice the sweet potatoes thinly and had no prob with the timings. My lamb steaks I took out the fridge in advance so they were not cold going into the pan and I let it rest a little before serving. Used fresh rosemary. Served with tender stem broccoli. It was very lovely--so nice to have a tasty, easy dish on the list with only a few ingredients and that is not loaded with garlic.
6th Sep, 2015
Doesn't work. Need to cook the potatoes first
29th Mar, 2015
Really enjoyed this. Agree need to cook vegetables longer before putting on the lamb. I made a jus ( posh gravy) red onions/ red wine /beef oxo/ and a bit of bisto. All went down very well !
7th Dec, 2014
I made this meal, but with a red wine/beef stock reduction. I feel it would have been very dry and quite boring without this sauce. Use the pan the lamb steaks are fried in: Add finely chopped garlic, rosemary, thyme, 200ml red wine, 200ml beef stock. Turn the heat up high and reduce until it begins to thicken and add 25-50g butter to finish.


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