Roast Lamb with rosemary butter & red wine sauce

The classic rosemary and garlic combination that compliments a roast lamb with a lush red wine sauce to pour over

Submitted by Paulene Christie

Roast Lamb with rosemary butter & red wine sauce

The classic rosemary and garlic combination that compliments a roast lamb with a lush red wine sauce to pour over
5 from 3 votes
Serving: 6
Prep Time 10 minutes
Cook Time 5 hours
Total Time 5 hours 10 minutes


  • 1.5kg half leg lamb roast
  • 1 tsp dried rosemary (you can use fresh if you have it)
  • 1 heaped teaspoon of minced garlic
  • 1/4 tsp each of salt and cracked black pepper
  • 1.5 tbsp butter (softened)
  • 1/2 cup red wine (Shiraz if you have it)
  • 1 tbsp vegetable stock powder
  • 1 tbsp tomato paste
  • 3/4 cup hot water
  • 1 tbsp cornflour to thicken


  • Place lamb roast directly into bottom of slow cooker
  • Combine butter, rosemary, garlic, salt and pepper and mix well to form the herbed butter
  • Use a spoon to spread the butter over the top and sides of the lamb.
  • Combine wine, stock, paste and water and stir well to mix.
  • Pour this liquid into the bottom of your slow cooker around the lamb (but not down over the butter)
  • Baste meat with cooking juices during cooking occasionally if you are around to do so.
  • Cooked on HIGH for 5hrs in my 5L Breville Slow Cooker
  • Just before serving I removed lamb from slow cooker then scooped out excess fat from top of the sauce in the slow cooker (lamb being very oily you will be able to scoop a lot out)
  • Then I combined the cornflour with a spoonful of tap water and stirred through juices and placed the searing slow cooker on a stove top to reduce the liquids into a lush gravy for the lamb. If your slow cooker isn't a searing model just transfer sauces to a saucepan on stove to do this step


  • If like me you don't regularly drink wine you can purchase an inexpensive bottle of Shiraz for around $5 and I was told it would keep for a long time in the cupboard to continue using in your cooking.

26 thoughts on “Roast Lamb with rosemary butter & red wine sauce”

  1. I have a 2.5 kilo roast. Any recommendations on cooking time for this larger piece? I have a 6L Kambrook cooker.

  2. Katie Goodlich

    Absolutely love love loved this even my bf who was bit skeptical of a roast 8n a slow cooker loved it

  3. Beautiful. Really enjoyed this and prepared the gravy for it as well. Everyone ate it and enjoyed it. Thanks so much for such a delicious recipe.

  4. Really delicious. Everyone enjoyed it, which was a lovely surprise for me. Served it with the gravy as recommended in the recipe.

    We’ll definitely have this again.

  5. This was delicious. I added couple of spoons of gravox after to the gravy. (Put it in a pot on the stove) . Also seared the meat ion the bbq after cause I roasted the veggies in the bbq! Yum!

  6. Amazing, falling off the bone roast lamb? Yes please!
    Didn’t need a knife to cut it and don’t need one to eat it!

    Reminds me of eating at a fancy restaurant with the red wine reduction type gravy haha

    Did it with some roast veggies in the oven and popped the lamb in the oven for 15 minutes to crisp up a bit

  7. Well I wanted my lamb to be just a little more special for Easter Sunday, and this certainly was extra special! Absolutely delicious !! The gravy was amazing too!!! Thank you so much for this recipe. Will definitely be using it again!

  8. Very nice, although I had no red wine per say, but used red wine vinegar..
    Meat was lovely, sauce great too but had the vinegar tang, nothing bad, but adds a different flavour

  9. 5 stars
    this was delicious. 2.5kg leg of lamb on low for 9h. drained the liquid from the meat with 1 h to go to put in the fridge to split. skimmed off the fat then put the liquid into a pan & added greens gravy to simmer & thicken. will make again

  10. First time ever doing a roast in the slow cooker. Got to say, no more hot oven here for lamb. This was easy and soooo damn good. I was full even before i got my plate dished up, but went down so well at 9pm lol.

  11. 5 stars
    I did thus lamb last Easter and couldn’t remember exactly what went in the slow cooker! I did remember it was delicious. Pauline found it again for me and we had it again on Sunday. This is my husbands and my absolute favourite now and I’ve made sure I saved the recipe for future!!

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