Garlic Rosemary Grilled Leg of Australian Lamb

The aroma of rosemary and garlic sizzling on a hot grill is, for me, the very essence of summer. Growing up, my grandfather, a butcher by trade and a grill master by passion, would prepare lamb in this exact way for every family gathering. The perfectly charred exterior giving way to a tender, juicy interior; the herbaceous fragrance permeating the air, signaling that something truly special was about to be served. Every time I recreate this dish, I’m transported back to those sun-drenched afternoons, surrounded by loved ones, sharing laughter and the simple pleasure of perfectly cooked lamb.

Recipe Overview

• Prep Time: 24 hours 45 minutes
• Cook Time: 35-45 minutes
• Total Time: 25 hours 30 minutes
• Servings: 8
• Dietary Type: Gluten-Free, Dairy-Free

Ingredients

• Australian Lamb
  • 1 Australian leg of lamb, boneless
• Marinade
  • 1 teaspoon cayenne pepper
  • 2 tablespoons garlic, chopped
  • 2 teaspoons kosher salt, divided, to taste
  • 1/2 cup extra virgin olive oil
  • 1 tablespoon lemon zest, divided
  • 1/4 cup lemon juice, divided
  • 1 teaspoon fresh rosemary, chopped
• Roasted Red Pepper Sauce
  • 18 ounces roasted red peppers (about 5 peppers/3 cups)
  • 2 tablespoons extra virgin olive oil, divided
  • 2 tablespoons lemon zest, divided
  • 2 tablespoons lemon juice, divided
  • 1/2 teaspoon fresh rosemary, chopped

Equipment Needed

• Grill
• Blender
• Large bowl or container
• Meat thermometer

Instructions

1. Prepare the Marinade: In a large bowl or container, combine the cayenne pepper, chopped garlic, 1 teaspoon kosher salt, 1/2 cup of extra virgin olive oil, 1 tablespoon of lemon zest, 1/4 cup of lemon juice, and 1 teaspoon of chopped fresh rosemary. Mix well to ensure all ingredients are incorporated. This aromatic blend will infuse the lamb with a depth of flavor.

2. Marinate the Lamb: Place the boneless leg of lamb into the bowl with the marinade. Ensure the lamb is thoroughly coated on all sides. Cover the bowl or container and refrigerate for 24 hours. Turning the lamb every few hours will help ensure even marination and maximum flavor penetration.

3. Preheat the Grill: Preheat your grill to medium-high heat. For best results, use a gas grill or charcoal grill. Ensure the grill grates are clean and lightly oiled to prevent sticking.

4. Grill the Lamb: Place the marinated leg of lamb directly onto the preheated grill grates. Cover the grill. After 15 minutes, remove the cover and turn the lamb to the other side. Cover the grill again. Continue to turn the meat every 15 minutes, ensuring even cooking and preventing burning.

5. Monitor Internal Temperature: Use a meat thermometer to monitor the internal temperature of the lamb. Cook until it reaches an internal temperature of 140°F (60°C) for medium-rare. This process should take approximately 35-45 minutes, depending on the thickness of the lamb and the heat of your grill. Remember that the internal temperature will continue to rise slightly after you remove it from the grill (carryover cooking).

6. Rest the Lamb: Once the lamb reaches the desired internal temperature, remove it from the grill and place it on a cutting board. Cover loosely with foil and let it rest for at least 10-15 minutes before slicing. This allows the juices to redistribute throughout the meat, resulting in a more tender and flavorful final product.

7. Prepare the Roasted Red Pepper Sauce: While the lamb is resting, prepare the roasted red pepper sauce. In a blender, combine half of the roasted red peppers (about 2.5 peppers or 1.5 cups), the remaining 2 tablespoons of extra virgin olive oil, 2 tablespoons of lemon zest, 2 tablespoons of lemon juice, and 1/2 teaspoon of chopped fresh rosemary. Blend until smooth and creamy.

8. Finish the Sauce: Gently fold in the remaining roasted red peppers (roughly chopped for a chunky texture) into the blended sauce. Season to taste with the remaining kosher salt (about 1 teaspoon, or adjust to your preference). Refrigerate the sauce until ready to serve.

9. Slice and Serve: After the lamb has rested, slice it thinly against the grain.

10. Plate and Garnish: To serve, place approximately 6 ounces of sliced lamb on each plate. Top with 1/4 cup of the chunky roasted red pepper sauce. Garnish with a sprig of fresh rosemary, if desired.

Expert Tips & Tricks

• Marinating Time is Key: Don’t skimp on the marinating time! The longer the lamb marinates, the more flavorful and tender it will become. 24 hours is ideal, but even a minimum of 6-8 hours will make a noticeable difference.
• Achieve the Perfect Sear: For a beautiful crust and enhanced flavor, ensure your grill is preheated to the correct temperature. Pat the lamb dry with paper towels before placing it on the grill to help it sear properly.
• Control Flare-Ups: Lamb fat can cause flare-ups on the grill. Keep a close eye on the lamb and move it to a cooler part of the grill if necessary. You can also use a spray bottle filled with water to dampen the flames.
• Don’t Overcook: Overcooked lamb can be dry and tough. Use a meat thermometer to ensure the lamb is cooked to your desired level of doneness. Remember, the internal temperature will rise slightly during the resting period.
• Customize the Sauce: Feel free to adjust the ingredients in the roasted red pepper sauce to your liking. Add a pinch of red pepper flakes for a touch of heat, or a drizzle of balsamic vinegar for added tanginess.
• Make Ahead Magic: The roasted red pepper sauce can be made several days in advance and stored in the refrigerator. This allows the flavors to meld together and develop even further.

Serving & Storage Suggestions

Serve the sliced Garlic Rosemary Grilled Leg of Australian Lamb immediately after resting for the best flavor and texture. The roasted red pepper sauce adds a vibrant color and delicious flavor contrast.

Serving Suggestions:

• Pair with roasted vegetables such as asparagus, bell peppers, or potatoes.
• Serve with a side of couscous or quinoa for a complete meal.
• Offer a fresh green salad with a light vinaigrette.
• A dry red wine, such as Cabernet Sauvignon or Merlot, complements the lamb beautifully.

Storage:

• Leftover sliced lamb can be stored in an airtight container in the refrigerator for up to 3 days.
• Roasted red pepper sauce can be stored in an airtight container in the refrigerator for up to 5 days.
• Reheating: Reheat the sliced lamb gently in a skillet over low heat or in the microwave. Avoid overheating, as this can dry out the meat. The roasted red pepper sauce can be reheated in a saucepan or in the microwave.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	168.6 kcal	N/A
Calories from Fat	154 g	91%
Total Fat	17.1 g	26%
Saturated Fat	2.4 g	11%
Cholesterol	0 mg	0%
Sodium	1310.4 mg	54%
Total Carbohydrate	4.7 g	1%
Dietary Fiber	1.2 g	4%
Sugars	0.4 g	1%
Protein	0.8 g	1%

Note: Nutritional information is an estimate and may vary based on specific ingredients and preparation methods.

Variations & Substitutions

• Herb Variations: While rosemary is a classic pairing with lamb, feel free to experiment with other herbs such as thyme, oregano, or mint.
• Spice it Up: Add a pinch of red pepper flakes to the marinade for a subtle kick.
• Lemon Alternatives: If you don’t have lemons on hand, you can use lime juice and zest instead.
• Vegetarian Option: While this recipe is centered around lamb, you can adapt the marinade and sauce to use with grilled portobello mushrooms or eggplant for a vegetarian-friendly option.
• Marinade Additions: Add a tablespoon of Dijon mustard or Worcestershire sauce to the marinade for added depth of flavor.

FAQs (Frequently Asked Questions)

Q: How do I prevent the lamb from sticking to the grill?
A: Ensure your grill grates are clean and lightly oiled before placing the lamb on the grill. Patting the lamb dry with paper towels before grilling also helps to prevent sticking.

Q: What is the best way to check if the lamb is cooked to my desired level of doneness?
A: Use a meat thermometer to monitor the internal temperature of the lamb. Insert the thermometer into the thickest part of the meat, avoiding bone.

Q: Can I marinate the lamb for longer than 24 hours?
A: While 24 hours is ideal, you can marinate the lamb for up to 48 hours. However, be mindful that the longer the lamb marinates, the more intense the flavor will become.

Q: Can I use dried rosemary instead of fresh rosemary?
A: While fresh rosemary is preferred for its superior flavor, you can use dried rosemary in a pinch. Use about 1 teaspoon of dried rosemary for every tablespoon of fresh rosemary called for in the recipe.

Q: Can I make the roasted red pepper sauce without a blender?
A: If you don’t have a blender, you can finely chop the roasted red peppers and combine them with the other ingredients. The sauce will have a chunkier texture, but the flavor will still be delicious.

Final Thoughts

I encourage you to try this Garlic Rosemary Grilled Leg of Australian Lamb recipe and experience the joy of creating a truly memorable dish. The combination of tender, juicy lamb, fragrant herbs, and vibrant roasted red pepper sauce is simply irresistible. Don’t be afraid to experiment with variations and substitutions to create your own signature version. Share your creations with friends and family, and let them savor the delicious flavors of summer. And most importantly, please leave your feedback and share your experiences in the comments below! Cheers to good food and great company!