Slow Cooker Leg Of Lamb

By Lucy Parissi

4.52 from 41 votes

, Updated Nov 27, 2025

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Incredibly tender Slow Cooker Leg of Lamb that’s succulent, juicy and falling apart at the touch of a fork.

This is truly the easiest way to cook roast lamb – add a handful of ingredients to your slow cooker and leave it to work its magic for 8-10 hours. You will be rewarded with the tenderest roast and the base for a delicious gravy.

You will also love my Slow Cooker Roast Beef

Cooking lamb in your slow cooker is winning at life. No browning, hardly any prep – it is just SO EASY! Start this recipe in the morning and by dinner time you will have the BEST slow cooker roast lamb and the pan juices create a killer gravy.

I usually advise to brown any meat before cooking in the crock pot but I think you can get away with it in this recipe. Anything to make life a little easier, eh?

Although leg of lamb is not usually associated with slimming plans, this slow cooker lamb renders most of the fat while it cooks and you can discard any fatty bits when you serve.

You will need to strain the juices from the cooker into a gravy separator to discard the fat before making the gravy.

Crockpot Lamb Ingredients

The one thing to keep in mind is to check the lamb will fit into your slow cooker! You might struggle with a full leg of lamb so I usually opt for a half leg  or two half lamb legs if I am feeding a crowd. You will need a slow cooker and a gravy separator for this recipe.

• Onion, garlic, carrots – these are used to enhance the flavour of the gravy. I usually don’t bother to peel the carrots or onion but feel free to if you like.
• Bone in half leg of lamb, about 1kg (just over 2 pounds) or two half legs if feeding a crowd. You can also use boneless leg of lamb (butterflied leg of lamb)
• Salt and pepper to season the lamb
• Beef stock cube, crumbled
• Red wine – or you can replace with a Oxo Stock Pot Red Wine
• Fresh rosemary or thyme
• For the gravy: any pan juices plus additional hot beef stock and cornstarch (cornflour) slurry to thicken.

How to make Slow Cooker Lamb

1. Place the carrots, onion and garlic in the slow cooker and top with the lamb. Season well with salt and pepper. Add the rosemary sprigs and crumble the beef stock cube over the lamb.

2. Pour in the wine or stock, cover and cook on LOW for 8-10 hours depending on how large your lamb joint is. At the end of the cooking time the lamb should be perfectly tender if pierced with the knife. Use a slotted spoon to transfer the lamb to a platter and cover loosely with foil.

3. Strain the pan juices from the slow cooker into a gravy separator. The fat will rise to the top and you can easily discard it. Alternatively put the pan juices in the freezer until the fat solidifies and then simply skim and discard it.
4. Add the de-fatted juices into a saucepan. Add the cornstarch slurry and ½-1 cup hot beef stock and bring to a simmer. Cook until the gravy is slightly reduced and thickened. Check the seasoning – it should not need any additional salt but add some if you like.
5. Use two forks to pull the lamb off the bone and shred it, picking out any bits of fat that remain. Serve with the gravy and your choice of side dishes.

Serving suggestions

Serve your slow cooker lamb leg with roast potatoes or in Yorkshire pudding wraps with a green salad and some steamed greens on the side. Here are some recipe suggestions from the blog archives.

Side dishes

Crispy Smashed Potato Salad

Greek Food

Traditional Greek Salad (Horiatiki Salata)

Greek Food

Greek Potato Salad

Side dishes

Healthy Cottage Cheese Dip with Roasted Tomatoes

HAVE YOU MADE MY SLOW COOKER LAMB RECIPE? Post a photo on my Facebook page, share it on Instagram, or save it to Pinterest with the tag #supergoldenbakes and make my day!

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4.52 from 41 votes

Slow Cooker Leg Of Lamb

By Lucy Parissi | Supergolden Bakes

Incredibly tender slow cooker leg of lamb that’s tender, juicy and falling apart at the tough of a fork. Add a second half leg if you are serving a crowd.

Prep Time: 5 minutes minutes

Cook Time: 8 hours hours 15 minutes minutes

Total Time: 8 hours hours 20 minutes minutes

Servings: 4 – 6

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Equipment

• GreenPan Slow Cooker
• Gravy Separator

Ingredients

• ▢ 1 onion , halved
• ▢ 3 carrots
• ▢ 2 garlic cloves
• ▢ 2 pounds (1 kg) half leg of lamb check it fits into your crockpot
• ▢ salt and pepper
• ▢ 1 beef stock cube , crumbled
• ▢ ½ cup (125ml) red wine replace beef or red wine stock if preferred
• ▢ 2 rosemary sprigs

For the gravy

• ▢ ½ cup (125ml) beef stock more if preffered
• ▢ 1 tbsp cornstarch (=cornflour) diluted in 2 tbsp cold water
• ▢ De-fatted pan juices

Instructions 

• Place the carrots, onion and garlic in the slow cooker and top with the lamb. Season well with salt and pepper. Add the rosemary sprigs. Crumble a beef stock cube over the lamb.
  1 onion, 3 carrots, 2 garlic cloves, 2 pounds (1 kg) half leg of lamb, salt and pepper, 1 beef stock cube
• Pour in the wine or stock, cover and cook on LOW for 8-10 hours depending on how large your lamb joint is. At the end of the cooking time the lamb should be perfectly tender if pierced with the knife. Use a slotted spoon to transfer the lamb to a platter and cover loosely with foil.
  ½ cup (125ml) red wine , 2 rosemary sprigs
• Strain the pan juices from the slow cooker into a gravy separator and discard any solids. Pour out the fat keeping the remaining liquid. Alternatively put the pan juices in the freezer until the fat solidifies and then simply skim and discard it.
• Add the de-fatted juices into a saucepan. Add the cornstarch slurry and hot beef stock and bring to a simmer. Cook until the gravy is slightly reduced and thickened. Check the seasoning – it should not need any additional salt but add some if you like.
  1 tbsp cornstarch (=cornflour), De-fatted pan juices, ½ cup (125ml) beef stock
• Use two forks to pull the lamb off the bone and shred it, picking out any bits of fat that remain. Serve with the gravy and your choice of side dishes.

Notes

• Although leg of lamb is not usually associated with Slimming World, this slow cooker lamb renders most of the fat while it cooks and you can discard any fatty bits when you serve. You will need to strain the juices from the cooker into a gravy separator to discard the fat before making the gravy.

Nutrition

Calories: 272kcal | Carbohydrates: 11g | Protein: 34g | Fat: 7g | Saturated Fat: 3g | Cholesterol: 101mg | Sodium: 431mg | Potassium: 735mg | Fiber: 2g | Sugar: 4g | Vitamin A: 7643IU | Vitamin C: 5mg | Calcium: 34mg | Iron: 3mg

Nutritional information is always approximate, and will depend on quality of ingredients and serving sizes.

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