Roast lamb is a timeless dish that never fails to impress. Whether it’s for a special holiday, a family gathering, or a Sunday dinner, this flavorful and tender meat is the epitome of comfort and elegance. The rich, succulent taste of lamb, paired with the aromatic herbs and spices, creates a dish that’s both hearty and refined.
To prepare a classic roast lamb, start with a bone-in leg of lamb or a rack of lamb – both cuts offer tender meat with a fantastic depth of flavor. The key to a perfect roast is in the seasoning. A simple yet delicious blend of garlic, rosemary, thyme, olive oil, salt, and pepper works wonders, infusing the lamb with an irresistible aroma while it roasts. For an added depth of flavor, you can make small slits in the lamb and insert slices of garlic or sprigs of rosemary to ensure that every bite is packed with fragrant herbs.
Before roasting, allow the lamb to come to room temperature. This ensures it cooks more evenly. Coat the lamb with the seasoning mix, massaging it into the meat to enhance the flavor. Place the lamb in a preheated oven and roast it at a high temperature for the first 15-20 minutes to develop a beautiful, caramelized crust. Then, lower the temperature and continue roasting until the lamb reaches your desired level of doneness, whether it’s medium-rare, medium, or well-done.
Roasting lamb is all about balance – achieving that perfect combination of a crispy, flavorful exterior and a juicy, tender interior. For an extra layer of richness, you can occasionally baste the lamb with its own juices or a bit of white wine or broth while it roasts.
Once the lamb is done, let it rest for 10-15 minutes before carving. This allows the juices to redistribute, ensuring every slice is tender and moist. Serve with a variety of sides like roasted vegetables, mashed potatoes, or a fresh mint sauce to complement the rich flavor of the lamb.
Roast lamb is a dish that always feels special but can be surprisingly simple to prepare. Whether you’re a seasoned cook or trying it for the first time, this meal is sure to leave a lasting impression on anyone who’s lucky enough to enjoy it.
Ingredients
- 1.5 kg leg of lamb bone-in
- 2 tbsp olive oil extra virgin
- 4 cloves garlic minced
- 1 tbsp rosemary fresh, chopped
- 1 tsp salt
- 0.5 tsp black pepper freshly ground
Instructions
- Preheat the oven to 180°C (350°F).
- In a small bowl, mix the olive oil, minced garlic, chopped rosemary, salt, and pepper.
- Rub the mixture all over the leg of lamb, ensuring it’s evenly coated.
- Place the lamb in a roasting pan and put it in the preheated oven.
- Roast the lamb for about 1.5 hours or until the internal temperature reaches 60°C (140°F) for medium-rare.
- Remove from the oven, cover with foil, and let it rest for 15 minutes before carving.
I followed the recipe but it came out way too tough! I think I overcooked it. Is 1.5 hours too long? I thought it would be juicy. 😕 2 stars.
1.5 hours should be enough for medium-rare. Maybe the oven was too hot? Can’t blame the recipe completely.
You probably overcooked it, yeah. But sometimes meat can be tough no matter what. I had my share of tough lamb too. 🤷♂️
Absolutely delicious! I made this for my family last weekend and they couldn’t stop raving about it. The garlic and rosemary really shine! 5 stars!
That sounds amazing! I love lamb, but I always thought it would be too hard to make. Maybe I’ll give it a try now!
But wait, isn’t lamb kinda greasy? I dunno, seems like too much fuss for meat. I’d rather just grill chicken.
This lamb was OK, but I’m used to making it with a bunch of spices… This felt a bit plain. Next time, I might add some chili flakes! 3 stars.
I don’t know about this. My lamb was dry and tough. Maybe I overcooked it? Not sure I’ll try it again.
This recipe is a game changer! The lamb turned out so juicy and flavorful. Will definitely make it again!
180°C seems a little low? My lamb browned slow, but the inside was still juicy. Next time I might crank to 200°C for the first 20 minutes.
Roast lamb? Nah, I only do beef. Pass.
Mine came out too salty—next time I’m cutting the salt in half. Other than that, the flavor was good. Maybe my salt was extra salty? lol.
I followed the instructions but it was too salty for my taste. Maybe I added too much salt? 🤔
Yummy! I added some lemon zest for extra zing. Will make again for sure!
My thermometer said 60°C and I freaked out, like is this safe?? Then it was fine and tender. Guess I overthink things.
Lol I’d freak out too 😅 60°C sounds scary until you remember you’re aiming for medium-rare. If it turned out tender and it was right on temp, you’re good. Resting also helps a ton.
I followed this pretty much exactly—garlic + rosemary smelled amazing. Medium-rare at ~1.5 hours was spot on for my 1.5 kg leg. Resting time really helped.
Delicious and easy to follow! I’m no chef but I nailed this one!
Lamb is so tough to cook right. Mine came out dry. I’m skeptical of this recipe!
This roast lamb was the star of our family dinner! Everyone loved it!
Wow, easy and flavors were on point. Five stars.
Isn’t 60°C too low? I thought lamb needs to be higher temp? Only chefs know I guess.
Good flavor, but I think 1.5 hours was a bit short for my oven. I ended up closer to 1 hr 45 and it still hit the temp I wanted. Still, the seasoning ratio is solid.
Honestly the simplest recipe, and it tastes like I tried way harder than I did. Would make again for sure.
Garlic + rosemary is always a winner. I used dried rosemary because I was out of fresh and it was still good.
Can someone explain why there’s garlic? Isn’t that like a big no for lamb???
Honestly the seasoning is basic but it works. Next time I’ll add a squeeze of lemon before roasting for brightness. Resting 15 mins helped a lot.
Too salty for my taste. I might cut back on the salt next time.
I totally get what you mean! Salt can really overpower the flavors. Maybe try using herbs instead for seasoning next time!
The instructions are good, but I wish it said what pan size to use and whether to cover at first or not. I guessed and it turned out fine, just not as browned as I hoped.
I followed it pretty much exactly, but my lamb was more medium than medium-rare. I’m not sure if my thermometer was off or if the leg was thicker. Either way, tasty though.
I don’t even like lamb usually but this was pretty good. Might have to try more lamb recipes now.
I’m glad you liked it! Lamb can be tricky, but this recipe really brings out the flavor. Give it another try!
I dunno, lamb kinda tastes like the farm to me. Not sure I’d try it again. But if you liked it, great!
I don’t know, the timing seems off. Mine came out a bit tough. Might be my oven though!
I substituted the lamb for chicken LOL. Still was good! Maybe should be called roast chicken.
The flavor was great, but I wish the timing was a bit more specific. Mine took closer to 1 hour 50 minutes depending on thickness.
Totally agree—“about 1.5 hours” feels too vague for something like lamb. I usually go by internal temp + how thick the roast is. Good catch on yours taking ~1h50!
Mine took like 2 hours the first time too. I think thickness and whether the lamb is room temp makes a big difference. Honestly the temp check is the only part that can’t lie 😅
simple and delicious!
Totally agree—this is the kind of roast that tastes fancy without being fussy. Garlic + rosemary always wins 😋
Meh. Just tasted like meat. I expected something more flavorful. 2 stars.
Lamb? No thanks. I prefer beef. But my neighbor loved it so it must be good.
I totally get that! Beef is a classic. But this lamb recipe might change your mind! 😄
Made this tonight and it was perfect. The garlic-rosemary combo smells amazing while roasting—resting it 15 minutes really helped the juices stay put.
60°C?? That sounds undercooked—my mom would not allow it. But I tried it with a thermometer and wow… it was actually right.
I actually used a leg of goat instead and it turned out fabulous!
I must’ve messed up somewhere. Mine came out way too dry. I followed the instructions exactly.
I dunno, mine was juicy! Maybe your oven runs too hot? Or try basting it next time.
Sorry to hear that! Sometimes lamb can dry out if it’s not enough fat or if it’s cooked too long. Did you use a meat thermometer?
How long do I cook it for if I wanna well done? My family likes it like that.
Wait, do you really need to let it rest before carving? Seems like a waste of time.
Letting it rest is super important! It helps keep the juices in, otherwise, it’ll be dry. Trust me, it’s worth the wait!
Not bad! I didn’t have fresh rosemary so I used dried and it tasted a little sharper. Also, I minced the garlic way too chunky—wouldn’t do that again 😅
This roast lamb was absolutely delicious! So juicy and flavorful, my family loved it!
This recipe was awesome! The lamb turned out so juicy and flavorful. My family loved it!
Sounds delicious! I’m glad it turned out well for you. I’m gonna try this recipe next!
Good, but I prefer beef. Lamb just isnt for me.
Yummy! But why does everyone say lamb is hard to cook? This was simple!
I completely agree! Lamb is super easy to cook, just follow the steps. I’m glad it turned out tasty for you!
Yeah, I find it confusing too. People overthink it, I guess? But it’s just meat. Gotta watch the temp tho!
My rosemary went brown lol but it still tasted fine. The garlic got a little too strong. Maybe 3 cloves next time? Otherwise solid recipe.
I dunno, 180°C for 1.5 hours seems a bit short for 1.5 kg bone-in. Maybe that’s why the garlic stayed punchy? I usually do 160°C longer or baste. But hey if it was still good, keep notes!
Lol the rosemary going brown is super normal when it hits the heat—glad it still tasted fine! If the garlic felt too strong, 3 cloves sounds like a great tweak.
I used dried rosemary because I didn’t have fresh (oops) and it was still decent. Could’ve been more fragrant. Salt and pepper ratio felt okay.
I made this but forgot to preheat the oven. Oops, guess it’s a cold lamb tonight! 😂
Cold lamb sounds ew, how does that even taste? You might as well just eat it raw! 😂
Haha, at least you made a funny story out of it! But seriously, don’t forget to preheat next time! 😉
This was an amazing recipe! The lamb turned out so tender and juicy. Definitely a winner at our family dinner!
Yum! Best dinner ever! 😍
Yummm! My family devoured this! A bit too much rosemary for my taste though.
Yummy! My kids loved it! I just threw some carrots in the pan too and they turned out delish!
Not gonna lie, 60°C is scary low to me. I usually do higher temps for safety. I know thermometers are “the thing,” but I’m cautious.
Simple and delicious! Used some mint jelly on the side and it was perfect. Thanks for sharing!
Made this last night—garlic + rosemary smelled incredible. Mine hit closer to 62°C at 1.5 hours, but it was still nicely pink. Resting time really matters!
62°C at 1.5 hours sounds about right for a thicker leg. I do 180°C too and usually pull it around the same range, then rest. Nice pink!
Yes!! Garlic + rosemary on lamb is unreal. Mine always comes out way better when I don’t rush the rest—15 minutes is key. Great call on the 62°C too.
Really easy to make! Didn’t have rosemary, used thyme instead and it still tasted great. 👍
This roast lamb recipe was to die for! So juicy and flavorful. Can’t believe I made it myself!
Lamb is so underappreciated! Really loved the flavors in this. Will make again for sure!
This roast lamb recipe is fantastic! I followed it exactly and it turned out perfectly. So juicy and flavorful!
I’m glad it worked out for you! This recipe is a keeper! 😋
180°C feels a bit low? I baked mine closer to 190°C and it browned better, but the inside was still juicy. Maybe it depends on the oven.
Too much garlic for my taste. Next time, I’ll cut it down a bit.
I’m not sure what I did wrong, but mine was pretty tough. Maybe I overcooked it? I followed the temp though.
Best lamb ever! My grandma used to make this, brought back good memories. ❤️
Meh. Too garlicy for my taste. Also my oven runs hot so it browned before it was done, lol. Would rate higher if milder.
Simple and solid. I wish the recipe mentioned whether to cover it for part of the roasting, but uncovered worked fine for me anyway. Great flavor.
It was good but took longer than the recipe said. Mine was overdone.
Delicious!!!
I don’t have fresh rosemary, only dried—still tasted decent though less punchy. Next time I’ll probably use more dried to compensate.
Good to know! Dried herbs are definitely milder—i usually use like 2–3x the amount when swapping for fresh. Glad it still came out decent 😊
Mmm roast lamb. 180°C for 1.5 hrs on a 1.5 kg leg seems a bit short to me though—did you check temps in the thickest part? Dried rosemary could totally explain the “less punchy.”
Made this last weekend—so good. The rosemary + garlic smell when it’s roasting is unreal. I pulled it at about 58–60°C and it came out beautifully medium-rare.
Yes!! That rosemary-garlic combo is unreal 😍 I’m always obsessed with the smell too. Great call on pulling it around 58–60°C—definitely saves it from going over.
Way too much effort for just lamb. Also 15 min resting seems too short—should be at least 30 for me. But I’ll admit it looked nice.
Not gonna lie, I skipped the roasting pan and used a casserole dish—my bad. It browned unevenly. Recipe itself is solid, just need the right setup.
Totally get it—roasting pans help a lot with airflow and even browning. Your comment makes sense: casserole dishes can steam a bit. Next time, maybe still use the casserole but crank the oven slightly or place it on a wire rack. Glad the rub was still solid though!
I’m not a fan of lamb. Should’ve tried chicken instead.
Wait—60°C is medium-rare? I always go by feel. Mine hit 60 and it was more like rare to me. Still, very juicy and not dry.
Absolutely delicious! I doubled the garlic and added some lemon juice for a zing. Will make again!
Pretty straightforward, like I can actually do this on a weeknight. I used dried rosemary because that’s what I had and it still tasted great. 4/5 would recommend.
Not sure what went wrong but it came out dry. Maybe I cooked it too long.
I think using dried rosemary would work too, right? Not everybody has fresh herbs at hand.
Dried rosemary should work, but it won’t taste the same! Fresh herbs are the best for flavor.
Roast lamb? More like roast disappointment. The meat was tough and dry. 1 star just for the smell.
Sorry to hear that! I thought the recipe was pretty straightforward. Maybe your lamb just needed more cooking time?
Easy to make if you follow instructions. I didn’t have fresh rosemary so I used dried, still okay.
But like, how can you call it roast lamb if you don’t use fresh rosemary? 🤔
I also used dried herbs before and it turned out great! Not much diff with fresh if you ask me.
I was skeptical about the garlic but wow! It gave it a nice kick! Will make again 🙂
Meh. Tasted fine but I expected more wow. Also rosemary was overpowering for me—maybe chop finer or use less.
Totally get that—rosemary can be really punchy. I’ve found chopping it super fine (or even giving it a quick crush) helps distribute it without tasting like you only ate the herb.
Omg this was awesome!!! 🤤 Can’t believe how easy it was, never thought it would taste this good.
So glad you loved it! 😉 It’s one of my favorites too!
180°C for leg of lamb? That seems low to me. I usually go hotter and sear first. Not saying it’s bad, I just don’t trust the timing.
So good, just add some mint sauce and it’s perfect! Yum!
Looks great!
Thanks! 😊 The rosemary-garlic rub smells amazing while it roasts.
I followed everything and my lamb was still kinda pink but also chewy? Not sure if my leg was larger. Maybe my oven runs hot. Still tasty tho.
I thought it would be hard to cook but it was pretty simple!
Hard? It’s just meat with some stuff on it, lol. Anyone can do it if they try!
I’m glad to hear that! It really is easier than it looks. Did you enjoy the flavors?
The flavor was great but I over-salted a bit because I forgot it calls for 1 tsp. Next time I’ll be careful. Resting 15 minutes helped a lot.
This turned out incredible—garlic and rosemary smell was unreal. I did pull it a few minutes earlier and it was perfectly medium-rare. Great simple method!
Yes!! The garlic-rosemary combo is unreal—glad you nailed the medium-rare too. Pulling it a few minutes early is such a pro move.
Pretty straightforward and the spice mix tastes legit. I didn’t have fresh rosemary so I used dried (way less amount) and it still worked.
I was a bit skeptical at first, but this actually was pretty good. 1.5 hours seems long tho; maybe should’ve checked sooner.
Too much garlic for my taste. Might skip that next time.
I thought lamb was supposed to be super fatty? It was actually pretty lean. Anyone else notice that?
Easy to make, but I used dried rosemary and it didn’t taste as fresh. Still nice overall.
I dunno… dried stuff just ain’t the same. $@!# yeah, it’s easy but fresh is best! You’d be missing out otherwise!
Fresh rosemary definitely makes a difference! I’m glad you still enjoyed it though. Maybe give it another shot with fresh herbs next time!
Easy to make and tastes great! Will make again for sure.
Why is everyone raving? This was way too garlicy for my taste. My family didn’t like it either. Never again!
I love garlic, so this recipe sounds amazing to me! But I get that not everyone likes it strong. Maybe you can use less next time?
Lamb was tasty, but 1.5 hours for 1.5 kg seems too general. Also, I forgot to mince garlic fine and it got a bit punchy. Still ate it all though 😅
Perfect roast, served it with mint sauce and it was amazing!
I followed it pretty much exactly, but 60°C at 180°C felt a little fast—maybe my oven runs hot. I ended up roasting another 10-15 minutes and it turned out good.
Leg of lamb bone-in—sure, if you want to wrestle a pan of meat for an hour and a half. Delicious though. Also I forgot to mince garlic and it was more like chunky garlic confetti.
Made this tonight—super flavorful. The garlic-rosemary rub smells incredible and the lamb came out juicy after resting. I pulled it at a slightly higher temp and it was still great.
This is the first time my lamb didn’t come out dry. The rub actually stuck and the rest period mattered. Will repeat.
This is a little too salty for my taste. I followed the recipe exactly but next time I’ll cut the salt down and maybe add lemon zest. Otherwise tasty and easy.
Made this tonight—so easy and the garlic-rosemary combo is perfect. I pulled it at about 62°C and it was beautifully medium-rare. Resting time helped a lot.
Yes! The garlic-rosemary rub is legit. I always forget how much the rest time matters until I do it—so glad yours came out medium-rare.
62°C? Wow that’s closer to medium than I’d think. I’ve cooked lamb before and 60°C sounds kinda risky to me, but if it tasted good then fair enough lol.
Hard to mess up lamb, right? But this one actually requires a lot of attention, maybe a 3.
I totally agree! Lamb needs a bit of care to get it just right. But once you nail it, it’s so worth it!
Not bad, but 60°C for medium-rare felt too low to me—still turned out a bit pink and juicy though. I’m not sure I trust meat temps.
Totally get you—60°C sounds low if you’re used to beef temps. But lamb can be forgiving; if it’s still pink and juicy after resting, that’s usually a good sign. Do you calibrate your thermometer? Those can be wildly off.
I don’t trust temps at all 😅 I always go by feel and time. Last time my “medium rare” turned out pinkish and I was like… cool? I guess 15 min rest matters a lot too.
The seasoning ratio is nice, but I ended up using a little more rosemary because I’m obsessed. Also, I couldn’t mince the garlic that fine—still turned out great.
Mine took longer than 1.5 hours to reach 60°C, but that’s on me for not checking with a thermometer sooner. When it finally hit temp, it was perfect.
So easy. Five stars!
180°C for 1.5 hours feels a little vague with bone-in lamb. Mine needed closer to 1 hr 45 mins before it hit temperature. Still tasty though.
I don’t trust that internal temp for lamb—60°C sounds too low to me. I’m usually safer going higher. Anyone else go by time instead?
I get you—60°C feels low at first. But for lamb, 60°C for medium-rare is pretty standard. I still trust the thermometer more than guessing time.
Meh. I expected it to taste more “roasty.” It was good, but kind of basic compared to the way my aunt does it with mustard and breadcrumbs.