Garlic Herb Roasted Lamb

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Garlic Herb Roasted Lamb (Oven Roast)

This recipe focuses on a “wet rub” technique, creating a thick crust of aromatics that infuses the meat while keeping the inside tender and pink.

  • Prep time: 20 minutes

  • Cook time: 1.5 – 2 hours (depending on weight)

  • Servings: 6–8 people

Ingredients

  • The Meat: 4–5 lb Leg of Lamb (bone-in or boneless, tied)

  • The Rub:

    • 6 cloves garlic, minced

    • 2 tbsp fresh rosemary, finely chopped

    • 1 tbsp fresh thyme, chopped

    • 1/4 cup extra-virgin olive oil

    • 2 tsp Kosher salt

    • 1 tsp freshly cracked black pepper

    • Zest of 1 lemon

  • The Pan:

    • 2 red onions, quartered

    • 1 lemon, sliced into rounds

    • 1 cup beef or chicken stock (to prevent scorching)

Instructions

  1. Tempering: Remove the lamb from the fridge 1 hour before cooking. This ensures it cooks evenly. Pat it very dry with paper towels.

  2. Make the Paste: In a small bowl, mix the garlic, rosemary, thyme, olive oil, salt, pepper, and lemon zest.

  3. Prepare the Roast: Use a sharp knife to score the fat layer in a crosshatch pattern (don’t cut into the meat). Rub the garlic-herb paste all over the lamb, massaging it into the scores.

  4. Set the Pan: Place the onion quarters and lemon slices at the bottom of a roasting pan. Pour in the stock. Place the lamb on top (use a rack if you have one).

  5. Roast: Preheat your oven to 450°F (230°C). Sear the lamb for 15 minutes to develop a crust, then lower the heat to 325°F (160°C).

  6. Check Temperature: Roast until a meat thermometer hits your desired doneness (see chart below).

  7. The Rest: Transfer the lamb to a cutting board and tent loosely with foil. Rest for 20 minutes. This is the most important step for juicy meat!

Cooking Guide (Internal Temps)

Doneness Pull from Oven Final Temp (After Rest)
Medium-Rare 130°F (54°C) 135°F (57°C)
Medium 140°F (60°C) 145°F (63°C)
Well Done 155°F (68°C) 160°F (71°C)

Pro Tips

  • Don’t over-garlic: While garlic is great, too much minced garlic on the surface can burn and become bitter. If you love it extra garlicky, poke small slits into the meat and tuck whole slivers of garlic inside.

  • The Pan Juices: Don’t toss the liquid in the pan! Strain it, skim the fat, and serve it as a light jus.

  • Acid is Key: The lemon slices in the photo aren’t just for show; the acidity cuts through the richness of the lamb fat.

Nutritional Info (Per Serving)

  • Calories: 420 kcal

  • Protein: 48g

  • Fat: 24g (Saturated: 9g)

  • Carbs: 3g

  • Benefits: Lamb is an excellent source of Vitamin B12, Zinc, and Selenium. It is a “complete” protein containing all essential amino acids.

Q&A

Q: Can I use dried herbs instead of fresh?

A: You can, but use 1/3 of the amount (dried herbs are more concentrated). However, for a roast like this, fresh herbs provide a vastly superior “crust” and aroma.

Q: Should I cover the lamb while roasting?

A: No. You want the dry heat of the oven to brown the exterior. Only cover it with foil after it comes out of the oven to keep it warm while resting.

Q: My lamb is “gamey.” How do I fix that?

A: The “gamey” flavor is concentrated in the fat. While you need some fat for flavor, trimming away very thick, waxy patches of hard white fat can mellow the taste. The lemon zest in the rub also helps neutralize those heavy notes.

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