Roasted Leg Lamb Rosemary

A beautifully browned Roasted Leg of Lamb with rosemary, served on a bed of roasted vegetables. Save to Pinterest
A beautifully browned Roasted Leg of Lamb with rosemary, served on a bed of roasted vegetables. | speakingfood.com

This dish features a bone-in leg of lamb, marinated with a fragrant paste of rosemary, garlic, thyme, lemon zest, and olive oil. The lamb is carefully incised and infused with garlic slices, then roasted on a bed of sliced onions, carrots, and celery. White wine or broth adds moisture, creating rich pan juices. Roasted to medium-rare or preferred doneness, the lamb rests before serving, yielding tender, juicy slices perfect for family gatherings or special occasions.

Discovering this roasted leg of lamb with rosemary was like unlocking a delicious secret handed down from my grandmother. The first time I made it, the aroma filled the house and everyone gathered around was instantly captivated.

I remember once when unexpected guests arrived just as this lamb was coming out of the oven ; the warm, savory scent won them over before they even sat at the table.

Ingredients

  • Bone-in leg of lamb: I always pick a trimmed leg for an even cook and tender meat
  • Fresh rosemary and garlic: The key players that infuse this dish with fragrant flavor
  • Olive oil: Helps the herb paste cling and creates a lovely roasted crust
  • Onions, carrots, celery: They make a tasty roasting bed that adds subtle sweetness
  • Dry white wine or chicken broth: Adds moisture and depth to the pan juices

Instructions

Get Everything Ready:
Preheat the oven to a high heat so you get a nice crust. Gather fresh herbs, garlic, and ingredients to make the paste.
Make the Herb Paste:
Mix rosemary, garlic, lemon zest, thyme if using, salt, pepper, and olive oil. The smell should be fresh and mouthwatering.
Prep the Lamb:
Pat it dry then make small slashes all over and tuck garlic slices inside. This creates pockets of flavor that burst on roasting.
Rub It Down:
Massage the herb paste all over the lamb, coating every nook so the flavors penetrate.
Arrange Veggies:
Scatter onions, carrots, and celery in a roasting pan as a bed to lift the lamb and add natural sweetness from the roasting juices.
Pour the Liquid:
Add your wine or broth carefully around the veggies, avoiding washing off the herb rub.
Roast High then Low:
Start at 220°C to seal in the flavors and create crust, then lower heat to gently cook to medium-rare perfection.
Rest Before Carving:
Allow the lamb to rest tented with foil so the juices redistribute and stay succulent.
Serve with Pan Juices:
Strain and skim the pan juices for a luscious sauce that ties everything together.
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| speakingfood.com

This dish became more than dinner one winter evening when it brought a family together under one roof after many months apart, filling the room with warmth and laughter.

Keeping It Fresh

Fresh herbs are vital. I always chop rosemary just before mixing to capture its oils, and garlic sliced thin releases just the right punch without overpowering the lamb.

Serving Ideas That Clicked

Serving the lamb with roasted potatoes and a crisp green bean salad balances the richness beautifully. Don’t forget a drizzle of the pan sauce to elevate every bite.

Making It Ahead for the Freezer

This roast freezes well if wrapped tightly. When reheating, bring it gently up to temperature to keep it juicy.

  • Slice before freezing for quick meals
  • Save pan juices separately to reheat and pour warm
  • Label with date to enjoy within two months

Juicy, flavorful Roasted Leg of Lamb with rosemary, ready to be sliced for a celebratory dinner. Save to Pinterest
Juicy, flavorful Roasted Leg of Lamb with rosemary, ready to be sliced for a celebratory dinner. | speakingfood.com

Thanks for hanging out while we cooked together—can’t wait for you to try this and make it your own cozy tradition.

Recipe Help & Support

Marinate the lamb with the herb paste for up to 12 hours and avoid overcooking. Rest the meat after roasting to redistribute juices.

Thyme is optional and works well alongside rosemary, adding an extra layer of flavor.

Inserting garlic deep into the meat infuses bold, savory flavors throughout the lamb as it roasts.

After roasting, strain the pan juices, skim off excess fat, then simmer with a splash of wine until slightly thickened.

Roasted potatoes, green beans, or a fresh salad complement the rich flavors of the lamb nicely.

Roasted Leg Lamb Rosemary

Aromatic roasted leg of lamb with fresh rosemary, garlic, and vegetables for a flavorful main dish.

Prep 20m
Cook 90m
Total 110m
Servings 6
Difficulty Medium

Ingredients

Meat

  • 1 bone-in leg of lamb, trimmed (4–5 lb)

Marinade & Seasonings

  • 4 garlic cloves, thinly sliced
  • 3 tbsp fresh rosemary, finely chopped
  • 2 tbsp fresh thyme leaves (optional)
  • 2 tsp kosher salt
  • 1 tsp freshly ground black pepper
  • 3 tbsp olive oil
  • Zest of 1 lemon

Vegetables

  • 2 large onions, thickly sliced
  • 3 large carrots, peeled, cut into large chunks
  • 2 celery stalks, cut into large chunks

Liquid

  • 1 cup dry white wine or low-sodium chicken broth

Instructions

1
Preheat Oven: Set oven to 425°F.
2
Prepare Herb Paste: Combine rosemary, garlic, thyme (if used), lemon zest, salt, pepper, and olive oil in a small bowl to form a paste.
3
Prepare Lamb: Pat lamb dry. Make small, deep incisions all over and insert garlic slices into each.
4
Apply Paste: Thoroughly rub the herb paste over the entire surface of the lamb.
5
Arrange Vegetables: Spread onions, carrots, and celery evenly in a large roasting pan. Place lamb on top, fat side up.
6
Add Liquid: Pour wine or broth into the pan, avoiding contact with lamb to preserve herb rub.
7
Roast Lamb: Roast for 20 minutes at 425°F, then reduce temperature to 350°F and continue roasting for 60 to 75 minutes until internal temperature reaches 135–140°F for medium-rare.
8
Rest Meat: Remove from oven, tent loosely with foil, and rest for 15–20 minutes.
9
Prepare Sauce and Serve: Strain pan juices, skim fat, optionally reduce with a splash of wine until slightly thickened, and serve alongside sliced lamb.
Additional Information

Equipment Needed

  • Large roasting pan
  • Sharp chef's knife
  • Small mixing bowl
  • Meat thermometer
  • Cutting board
  • Aluminum foil

Nutrition (Per Serving)

Calories 410
Protein 45g
Carbs 7g
Fat 22g

Allergy Information

  • Free of major allergens; verify broth or wine labels for potential allergens
Heather Collins