Hands down the easiest way to cook lamb leg, this Slow Cooker Roast Lamb Leg is fall apart tender and incredibly succulent. 2 minutes prep, pop it in the slow cooker before you leave for work. Then come home to a perfectly cooked lamb that just needs to be browned in the oven while you make a gorgeous gravy using the lamb juices!
In my world, there are only 2 ways to cook lamb leg: either perfectly cooked so it’s pink and juicy inside (see my classic Roast Lamb with Gravy), or long and slow so it’s fall apart tender.
There is no in between! Well, there is. But it’s dry and no amount of gravy can salvage it. It’s also very sad. ?
Roasting a lamb leg so it’s pink and juicy inside requires a meat thermometer to take the stress out of knowing when it’s perfectly cooked. You can of course wing it. But personally, I prefer to take the guess work out of it. Especially if you’ve splurged on a beautiful piece of high quality lamb leg!
But for ultimate stress free cooking, you cannot beat making a roast lamb in the slow cooker!
I know it sounds counter-intuitive to use the words “roast lamb” and “slow cooker” in the same sentence. But actually, it’s the right description for this recipe because it is cooked in the slow cooker and finished off in the oven to get that beautiful browning. And also to reheat it, in case the slow cooker finished and it was sitting on the warm function for a while.
And while it’s browning in the oven, make a quick gravy using the juices in the slow cooker. No need to deal with the clunkiness of making the gravy in a roasting pan, like you do when you roast lamb in the oven. Nope, this is a super simple one made in a saucepan using butter instead of the drippings in the roasting pan. And of course the juices left in the slow cooker. All. That. FLAVOUR!
My slow cooker is a standard size round one and I was able to fit in a 1.9kg / 3.8lb lamb leg. Though as you can see in the photo towards the top of the post, the lamb leg came with the shaft cut so I was able to bend it into the slow cooker. Lamb legs are sold like that even at local supermarkets here in Australia (Woolies, Coles, Harris Farms). Or you can make this with half lamb legs which don’t have the shaft so they will easily fit inside a standard slow cooker.
And of course, if you’re lucky enough to have one of those oval shaped slow cookers, you could make this with a full size lamb leg! After all, arguably one of the best things about roast lamb are the leftovers. Sandwiches with lamb and gravy. SO GOOD!!!! – Nagi xx
The easiest, most succulent roast lamb you'll ever have! This is not the carving sort of lamb, you can just tear the meat off using tongs. See recipe video below.
- 2.0 kg / 4 lb lamb leg, bone in (Note 1)
- 1 tsp salt
- Black pepper
- 2 large garlic cloves, minced
- 1 1/2 tsp dried thyme
- 1 tbsp olive oil
- 2 cups / 500ml beef stock / broth (or chicken) (Note 2)
- 50 g / 3 tbsp butter
- 3 tbsp / 40 g flour (any white)
- 2 cups / 500 ml braising liquid from slow cooker, strained
- Salt and pepper
Place lamb in slow cooker or on work surface. Sprinkle with salt, pepper, thyme and garlic. Drizzle over oil, then rub on both sides.
Pour beef stock into slow cooker.
SLOW COOK on low for 10 hours, or pressure cook on high for 1 1/2 hours. See notes for oven.
The lamb should be tender enough to pull off with tongs, but still holding together (just!). Carefully remove lamb from slow cooker and transfer to tray.
Drizzle lightly with oil (any). Bake at 200C/390F for 20 minutes or until browned. Remove and rest for 10 minutes before serving with gravy.
Strain liquid in slow cooker into a bowl - you will have more than the 2 cups of broth you added, I usually have over 3 cups. Measure out 2 cups of liquid, reserve remaining liquid just in case.
Melt butter in a saucepan over medium heat. Add flour and cook for 1 minute.
Add a bit of liquid, mixing as you go so it dissolves. Then add remaining liquid. Whisk if there are lumps.
Increase to medium high heat and cook, stirring regularly, until thickened to your taste. Use remaining liquid to thin if required.
1. Make sure you get a lamb that fits in your slow cooker! I have a standard size round slow cooker and I was able to fit in a 1.9kg/3.8lb lamb leg which had the shaft partially cut so it bends. In Australia, you can purchase half lamb legs which come without the shaft /bone which will fit in easily into a standard slow cooker. If you have an oval slow cooker, you can probably fit in the lamb leg even without the shaft cut.
A 2kg / 4 lb bone in lamb equates to about 1.5kg/3lb boneless lamb, same cook time.
If your lamb is about 1 - 1.25kg / 2 - 2.5lb, you can reduce the cook time to 8 hours. If your lamb is larger than 2.25kg /4.5lb, increase it to 12 hours.
2. If you use chicken broth, the gravy is slightly lighter in colour. The reason I use broth and not just the lamb juices is that lamb juices are very...well, LAMBY. 🙂 Too lamby for gravy. I find that 2 cups of broth combined with lamb juices = perfect gravy flavour.
3. OVEN: To make this in an oven, put lamb in a roasting dish, add the broth per recipe and add 2 cups of water (so there's 4 cups of liquid altogether). Cover tightly with foil, roast at 160C/320F for 5.5 hrs (standard) or 5 hrs (fan/convection). Then remove foil and bake at 180C/350F for 20 minutes until browned. If there is less than 2 1/2 cups liquid in roasting pan at the end, top up with water before making gravy.
4. Servings - 2kg/4lb bone in is about 1.5kg / 3 lb of meat which reduces to about 1.2kg/2.4lb of meat after cooking. This serves 4 generously or 5 for normal servings (in my opinion!).
5. Nutrition - This is a conservative calculation because it doesn't take into account the lamb fat and drippings that are discarded (which accounts for plenty of the calories!). Unfortunately I don't know how to estimate that, so I've not made an adjustment to exclude discarded fat.
Slow Cooker Roast Lamb Leg recipe video!
Slow Cooker Roast Lamb Leg nutrition. This is a conservative calculation because it doesn’t take into account the lamb fat and drippings that are discarded (which accounts for plenty of the calories!). Unfortunately I don’t know how to estimate that, so I’ve not made an adjustment to exclude discarded fat.
MORE ROAST LAMB
Classic Roast Lamb Leg with Gravy – Perfectly pink and juicy inside!
Slow Roasted Greek Lamb Leg – Amazing lemon and garlic flavours in this super tender lamb!
Slow Cooked Lamb Shoulder – My favourite cut of lamb for roasting! Super tender, incredible flavour, and so forgiving!
LIFE OF DOZER
Contemplating being a stowaway.
I don’t want to come across as a snob, but seriously Dozer, if you’re going to stowaway on a boat, you can do better than that!!!