Slow Roasted Leg Lamb

Slow roasted leg of lamb glistens, showcasing tender meat and crispy edges, ready for serving. Save to Pinterest
Slow roasted leg of lamb glistens, showcasing tender meat and crispy edges, ready for serving. | speakingfood.com

This slow-roasted leg of lamb is carefully prepared by inserting garlic and rosemary into deep slits. Coated with olive oil and seasoned with salt, pepper, and herbs, it’s roasted slowly over vegetables in a flavorful broth or wine base. The final high-heat roast creates a golden crust while preserving tender, juicy meat inside. Resting the lamb before slicing ensures maximum flavor and texture. Ideal for a special gathering or comforting dinner, served alongside pan juices or your choice of sides.

Discovering how to slow roast a leg of lamb with rosemary felt like unlocking a secret to effortless elegance in the kitchen. I remember the first time I tried it, the aroma filled the entire house and guests kept asking for the recipe.

One evening, unplanned guests arrived just as the lamb was finishing, and the warm, fragrant kitchen instantly turned a surprise into a celebration.

Ingredients

  • Lamb: A bone-in leg of lamb works best because the bone adds flavor and helps the meat stay juicy during the slow roast.
  • Fresh Rosemary: Fresh leaves give that bright aromatic lift that dried herbs just can't match, plus it helps create that beautiful crust.
  • Garlic: Slicing it and inserting into the slits really infuses the meat deeply with flavor.
  • Olive Oil: Choose a good quality extra virgin olive oil for richness that carries the herbs well.
  • Vegetables: Onions, carrots, and celery set the foundation for a savory base and keep the lamb elevated to roast evenly.
  • White Wine or Broth: Both add moisture and help develop the pan sauce at the end.

Instructions

Get Everything Ready:
Preheat the oven and prepare the lamb by making deep slits to tuck in garlic and rosemary, unveiling a melody of scents as the herbs seep in.
Coat and Layer:
Rub the lamb with seasoned olive oil, then nestle it atop a fragrant bed of vegetables, juices mingling and steam beginning to rise.
Let It Slow Roast:
Cover tightly and slow roast, letting the lamb become tender and the kitchen fill with a rich herbal aroma that promises comfort.
Finish with a Sizzle:
Uncover and roast at a higher heat to brown the crust, the sizzling sound giving way to visuals of a perfect mahogany finish.
Rest and Serve:
Allow the lamb to rest under foil so juices redistribute, then strain the pan juices creating a luscious sauce, completing the sensory experience.
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This dish became more than just a Sunday dinner when it brought everyone around the table during a tough week, reminding us how food can be a warm embrace.

Keeping It Fresh

If you're not serving right away, slice the lamb and refrigerate with pan juices to keep the meat tender and flavorful for leftovers.

Serving Ideas That Clicked

We loved pairing this lamb with roasted potatoes and a fresh green salad for balance, but crusty bread to soak up the pan sauce is never a bad idea either.

A Time This Recipe Saved the Day

One unexpected family gathering turned special thanks to this recipe; it was ready for the oven early, allowing me to focus on spending time rather than stressing over the meal.

  • Always have fresh herbs on hand for last-minute flavor boosts.
  • Remember to save the pan juices for sauces (they're liquid gold).
  • Leftovers aren't just for next day; shred the lamb into stews or sandwiches for a new twist.
Savor the aroma of rosemary on this slow roasted leg of lamb, a hearty and flavorful dinner delight. Save to Pinterest
Savor the aroma of rosemary on this slow roasted leg of lamb, a hearty and flavorful dinner delight. | speakingfood.com

Thanks for sharing a bit of your kitchen time with this recipe; here's to many cozy meals and happy memories ahead!

Recipe Help & Support

Roasting the lamb slowly at a low temperature allows the connective tissues to break down, resulting in tender meat. Covering with foil helps retain moisture.

Yes, thyme complements rosemary well and adds aromatic notes, enhancing the overall flavor profile of the dish.

Inserting garlic and rosemary into deep slits infuses the meat with flavor from within, creating a more aromatic and rich taste.

Resting allows juices to redistribute throughout the meat, ensuring each slice remains moist and flavorful.

Roasted potatoes, green salads, or steamed vegetables complement the rich flavors and balance the meal.

Slow Roasted Leg Lamb

Succulent slow-roasted leg of lamb infused with rosemary, garlic, and olive oil for deep, rich flavors.

Prep 20m
Cook 210m
Total 230m
Servings 6
Difficulty Medium

Ingredients

Lamb

  • 1 bone-in leg of lamb (4.5–5.5 lb), trimmed
  • 2 teaspoons kosher salt
  • 1 teaspoon freshly ground black pepper

Aromatics & Herbs

  • 5 cloves garlic, peeled and sliced
  • 2 tablespoons fresh rosemary leaves, chopped (plus extra sprigs for garnish)
  • 1 tablespoon fresh thyme leaves (optional)

For Roasting

  • 3 tablespoons olive oil
  • 2 medium onions, sliced
  • 2 large carrots, peeled and cut into chunks
  • 2 celery stalks, cut into chunks
  • 1 cup dry white wine or low-sodium chicken broth

Instructions

1
Preheat Oven: Set oven temperature to 300°F.
2
Prepare Lamb: Pat lamb dry with paper towels. Using a sharp knife, make deep slits throughout the leg and insert garlic slices and some chopped rosemary into each.
3
Season and Oil: Rub lamb evenly with olive oil, kosher salt, black pepper, remaining rosemary, and thyme if using.
4
Arrange Vegetables: Place sliced onions, carrot chunks, and celery pieces in bottom of large roasting pan and lay lamb on top.
5
Add Liquid: Pour dry white wine or chicken broth around the lamb, avoiding pouring directly over it.
6
Slow Roast Covered: Cover pan tightly with foil and roast for 3 hours.
7
Brown Crust: Remove foil, increase oven to 400°F, and roast uncovered for 30 minutes to develop a browned crust.
8
Rest: Transfer lamb to a cutting board, loosely cover with foil, and let rest for 20 minutes.
9
Prepare Sauce: Strain pan juices, skim off excess fat, and serve sauce alongside sliced lamb.
Additional Information

Equipment Needed

  • Large roasting pan
  • Sharp knife
  • Cutting board
  • Aluminum foil
  • Measuring spoons and cups
  • Strainer

Nutrition (Per Serving)

Calories 520
Protein 48g
Carbs 8g
Fat 32g

Allergy Information

  • Contains no common allergens; verify broth and wine labels for gluten or sulfites.
Heather Collins