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Jamie Oliver's roast leg of lamb with anchovies transforms a classic centerpiece into a restaurant-worthy masterpiece using just a few clever techniques. The secret lies in that savory herb crust—where finely chopped anchovies and fresh rosemary create layers of umami depth that elevate every bite.
I've perfected this method over countless holiday dinners, and the results never fail to impress even the most critical guests.
What makes this recipe truly special is how simple yet professional it feels—no complicated marinades or hours of prep. The anchovies dissolve into the lamb during roasting, infusing it with a subtle saltiness that balances perfectly with garlic, mustard, and fresh herbs.
The key is roasting at a precise temperature for the right amount of time, ensuring the meat stays juicy while developing that beautiful crust.
By the time you carve into this lamb, you'll have a dish that's tender yet firm, with a crust so flavorful it practically sings. The aroma alone will have everyone gathering at the table, and the first bite delivers that perfect harmony of herbaceous, savory, and slightly briny notes.
This is the kind of roast that makes Sunday dinners feel like a special occasion.
The best part? This recipe pairs beautifully with classic sides like minted peas, roasted root vegetables, or a crisp white wine sauce. Once you try it, you'll understand why this has become a staple in professional kitchens and home dining tables alike. Let's get cooking!
Ingredients for jamie oliver roast leg of lamb anchovies
Six ingredients transform lamb into restaurant-worthy perfection with just a few clever techniques.
| Ingredient | Amount | Notes |
|---|---|---|
| Leg of Lamb 🐑 | 4 lb | Bone-in, frenched for even cooking |
| Anchovy Fillets 🐟 | 12 whole | Finely chopped, high-quality preferred |
| Fresh Rosemary 🌿 | ⅓ cup | Finely chopped, stems removed |
| Garlic Cloves 🧄 | 6 cloves | Minced, fresh preferred |
| Dijon Mustard 🍯 | 2 tbsp | High-quality, smooth texture |
| Extra-Virgin Olive Oil 🫒 | ¼ cup | For crust and basting |
| Fresh Thyme Leaves 🌿 | ¼ cup | Finely chopped, stems removed |
| Kosher Salt 🧂 | 1 ½ tbsp | For seasoning and crust |
| Freshly Ground Black Pepper 🌶️ | 1 tbsp | Cracked peppercorns preferred |
| Unsalted Butter 🧈 | ½ cup | Cold, cubed for basting |
| Fresh Lemon Juice 🍋 | 2 tbsp | Brightens the crust |
| All-Purpose Flour 🌾 | ½ cup | For dusting and crust |
The lamb is everything here—bone-in, frenched leg for even cooking and maximum flavor. Whole Foods or your local butcher will have the best quality, but any well-marbled leg works. Look for bright red color and firm texture, not gray or slimy. I always ask for it to be frenched (trimmed of excess fat) to prevent burning. For anchovies, Constance brand in olive oil is my go-to—they dissolve perfectly without overpowering. Fresh rosemary and thyme? Garden variety from the grocery store works fine, but if you've got a herb garden, even better. The key is chopping them finely so they blend into the crust.
No anchovies? Substitute 1 tbsp fish sauce plus 1 tsp soy sauce—it's not the same but gets close. Short on rosemary? Thyme plus a pinch of marjoram works in a pinch. Dijon mustard is non-negotiable—it's what binds the crust together. Moutarderie de Dijon is the gold standard, but any good-quality jarred version works. The olive oil should be fruity and peppery—California or Italian varieties are ideal. For the butter, Plugrá or Land O'Lakes unsalted melt beautifully. Fresh lemon juice is best, but bottled works if you're in a hurry—just squeeze out the excess pulp.
This lamb tastes even better the next day, so plan ahead. Store leftovers wrapped tightly in the fridge for up to 4 days, or freeze portions for 3 months. The crust keeps well too—make extra and store it in the freezer for up to 1 month. For serving, let the lamb rest for 15-20 minutes before carving—this keeps it juicy. The crust will firm up as it cools, so don't worry if it looks soft right after roasting.
Why You'll Love This Recipe
- No-Fuss Roast: The anchovies and mustard paste do all the work—just rub, roast, and let the oven magic happen. I swear, the hardest part is deciding when to pull it out.
- Umami Bomb: That salty-sweet punch from the anchovies and rosemary? It’s the kind of flavor that makes you pause mid-bite. The garlic and mustard tie it all together like a perfect hug.
- Sunday Supper Star: This lamb feels fancy enough for company but simple enough for a lazy weekend. Leftovers? Even better—shred it for sandwiches or slice it thin for next-day lunches.
- Budget Luxury: A whole leg of lamb feeds a crowd without breaking the bank, and the anchovies add depth for pennies. Honestly, it’s the most impressive dish per dollar I’ve ever made.
Step-by-step instructions for Jamie Oliver's roast leg of lamb
Here's how to create that iconic crispy herb crust with anchovy umami depth—every bite delivers.
Prepare the Anchovy-Herb Paste
In a small bowl, combine the 12 whole anchovy fillets, 0.33 cup fresh rosemary, 0.25 cup fresh thyme leaves, 6 cloves minced garlic, 2 tbsp Dijon mustard, and 2 tbsp fresh lemon juice. This is where all the magic starts—the anchovies dissolve into a salty, umami-rich paste that becomes the foundation of your crust.
Use the back of a fork to mash everything together until it forms a thick, sticky paste. The rosemary and thyme should be finely chopped, with no stems remaining—they'll burn before the lamb cooks. Taste it now: it should be intensely savory with bright lemon notes. If it seems too salty, add a pinch of the 1.5 tbsp kosher salt to balance.
Create the Herb Crust Mixture
In a separate bowl, whisk together the 0.5 cup all-purpose flour, remaining 1 tbsp kosher salt, and 1 tbsp freshly ground black pepper. This dry mixture will help create that signature crispy crust. I like to rub it between my fingers to break up any lumps—this ensures an even coating later.
Now add the anchovy-herb paste to the flour mixture and stir vigorously with a wooden spoon. Gradually pour in the 0.25 cup extra-virgin olive oil while mixing until you have a thick, spreadable paste. It should cling together when pressed between your fingers. If it's too dry, add 1 teaspoon of water at a time until it reaches the perfect consistency—this ensures the crust will stick to the lamb without falling off.
Coat and Rest the Lamb
Pat the 4 lb leg of lamb completely dry with paper towels—this is crucial for crispy skin. The drier the surface, the better the crust will form. Rub the anchovy-herb paste all over the lamb, working it into the crevices and fat cap. Then press the flour mixture firmly onto the lamb, covering it completely. The lamb should now look like it's wrapped in a thick, savory blanket.
Place the lamb on a wire rack set inside a roasting pan (this allows air to circulate underneath for even cooking). Cover loosely with plastic wrap and refrigerate for at least 2 hours, or up to overnight. This resting period lets the flavors penetrate deeply and the crust set properly. I promise you won't regret this step—it makes all the difference in the final texture.
Roast to Crispy Perfection
Preheat your oven to 425°F. Remove the lamb from the refrigerator and let it sit at room temperature for 30 minutes before roasting. This ensures even cooking throughout. Place the roasting pan in the oven and roast for 45 minutes, then reduce the heat to 375°F and continue roasting for 1 hour 15 minutes to 1 hour 30 minutes (depending on your oven).
About 30 minutes before the lamb is done, remove it from the oven and add the 0.5 cup cold cubed butter to the roasting pan. Return the lamb to the oven and baste it with the melted butter every 15 minutes until the internal temperature reaches 145°F (measured with an instant-read thermometer in the thickest part of the leg). The crust should be deep golden brown and crispy, while the meat should be tender but not dry.
Rest and Slice for Maximum Juiciness
Transfer the lamb to a cutting board and let it rest for 20-30 minutes before carving. This resting period is essential—it allows the juices to redistribute throughout the meat, ensuring every slice is moist and flavorful. Tent loosely with foil to keep it warm during this time.
Slice the lamb against the grain into ½-inch thick portions. Each slice should reveal a beautiful pink center with a crispy, herb-encrusted exterior. The anchovy flavor will be subtle but unmistakable, adding depth to every bite. Serve immediately with roasted vegetables or a fresh salad to let the lamb shine.
Pro Tips For Making Jamie Oliver Roast Leg Of Lamb Anchovies
- CRANK THE OVEN TO 220°C: The anchovy-mustard crust needs a screaming-hot start to stick—don’t ease into it. After 15 minutes, drop to 180°C (or 160°C for medium), but that first blast is non-negotiable. I used to skimp here, and the paste would just slide off like it was greased.
- SMEAR THE ANCHOVIES THIN: Spread that anchovy-garlic-rosemary mix paper-thin over the lamb—don’t just slap it on. Use the back of a spoon to work it into the crevices, especially around the fat cap. Thick patches burn before the meat cooks, and you’ll end up with a sad, uneven crust.
- DON’T PUNCTURE THE FAT: Leave the lamb’s fat intact—it renders down into flavor gold as it roasts. If you score it (like I did the first time), you’ll lose juices and end up with a dry, stringy mess. Just pat it dry and let that fat work its magic.
- USE A MEAT THERMometer: Medium-rare lamb hits 55°C internal—not 60°C like beef. I learned this after slicing into a well-done brick and wondering why my fancy anchovy glaze couldn’t save it. A quick probe in the thickest part is worth the effort.
Storing and reheating your leftovers
Refrigerator Storage
Your roast leg of lamb with its anchovy-herb crust keeps beautifully in the fridge for up to 4 days when stored properly. Let it cool completely before transferring to an airtight container—I use glass Pyrex with snap-on lids to maintain moisture.
The crust will firm up slightly as it cools, so don't be alarmed if it looks different from when you took it out of the oven. 🌡️
To reheat, place the lamb in a skillet over medium-low heat with 1-2 tablespoons of water or broth to prevent drying. Cover with a lid and heat gently for 8-10 minutes, stirring occasionally.
The crust should crisp up again while the meat stays tender. I like to add a pat of butter during reheating to restore richness.
Freezer Storage
For longer storage, freeze portions in freezer-safe bags or airtight containers for up to 3 months. The crust holds up surprisingly well when frozen, though it may lose some crispness.
Thaw overnight in the fridge before reheating—never at room temperature to prevent bacterial growth. I recommend freezing in 1-2 pound portions for easy serving.
When reheating from frozen, add 5-10 extra minutes to the stovetop method, stirring occasionally with a splash of water or broth. For oven reheating, cover with foil and bake at 325°F for 20-25 minutes until reaching 165°F internal temperature. The crust will revive beautifully with this gentle approach.
Crust Preservation
The anchovy-herb crust is the star of this dish, so preserving its texture is key. If you've made extra crust mixture (which I highly recommend), store it separately in the freezer for up to 1 month.
Spread it thinly on parchment paper, then roll it up and freeze. When ready to use, simply thaw and press onto fresh lamb before roasting.
For leftovers, the crust stays crispy when reheated properly. I've found that adding a 1-minute broil at the end of reheating helps restore that golden crunch. Keep an eye on it—broiling can happen fast, so watch closely to avoid burning.
The anchovy flavor actually intensifies slightly after reheating, making every bite even more flavorful.
Serving Suggestions
This lamb tastes even better the next day, so plan to serve leftovers as a special treat. The flavors meld beautifully overnight, creating a more cohesive dish. I like to serve it with warm minted peas or roasted root vegetables to complement the rich lamb.
A drizzle of white wine reduction adds an elegant touch to any presentation.
For a restaurant-style presentation, arrange slices on a platter with the crust side up. Garnish with fresh rosemary sprigs and lemon wedges. The contrast between the crispy crust and tender meat makes for stunning visual appeal that will impress your guests.
The anchovy flavor becomes more pronounced when served cold, making it perfect for lunch the next day.
Nutrition facts
Frequently asked questions
Why does this recipe use anchovies in the crust?
Anchovies add a subtle, salty umami depth that balances the lamb's richness without overpowering it. When finely chopped and incorporated into the herb paste, they dissolve completely during roasting, creating a savory foundation that enhances every bite. This technique is inspired by Jamie Oliver's approach to building complex flavors with simple ingredients.
Can I make this recipe without a wire rack?
Yes, but your lamb may cook unevenly. If you don't have a wire rack, place the lamb directly on the roasting pan and elevate it slightly with a heatproof surface (like a baking sheet) to allow air circulation. This prevents steaming, which can make the crust soggy. For best results, use a rack whenever possible.
How do I know when the lamb is perfectly cooked?
Use a meat thermometer to check the internal temperature at the thickest part of the leg. For medium-rare (recommended), aim for 145°F. The lamb should feel tender when pressed gently with tongs, with a slight springiness. If the crust browns too quickly, tent it loosely with foil to prevent burning while it continues cooking.
What's the best way to store the anchovy-herb crust separately?
Spread the unused crust mixture on parchment paper in a thin layer, then roll it up and freeze for up to 1 month. When ready to use, thaw it completely before pressing onto fresh lamb. For leftovers, store the crust-covered lamb in an airtight container—it keeps its crispiness better when refrigerated than when frozen.
Can I substitute anchovies with another ingredient?
For a similar umami effect, try 1 tbsp fish sauce plus 1 tsp soy sauce in the paste. If you prefer a vegetarian option, use 2 tbsp nutritional yeast plus 1 tsp mushroom powder, though the flavor will differ slightly. The key is balancing saltiness with acidity—lemon juice helps bridge any gaps in substitution.