This Rosemary and Garlic Leg of Lamb Roast is an amazing, tender cut of meat slow roasted to perfection.

sliced leg of lamb roast on platter

I do believe that lamb is one of those kinds of meat that you either like or you don’t. I grew up eating roasted lamb at my grandparent’s ranch. So I happen to love the flavor, and I love a good lamb recipe. If you’ve never tried making it, this is an easy recipe to start with. It calls for very few ingredients, and it’s pretty simple. Just watch it closely using your meat thermometer, and it should turn out just perfect!

ingredients displayed for making rosemary and garlic leg of lamb roast

Ingredients needed:

  • boneless leg of lamb
  • freshly squeezed lemon juice
  • garlic cloves
  • fresh rosemary
  • kosher salt and freshly ground black pepper

three photos showing how to make rosemary and garlic leg of lamb roast

How to make Rosemary and Garlic Leg of Lamb Roast:

The complete, printable recipe is at the end of this post.

Preheat the oven to 450°F.
 
Using your hands, rub the lamb all over with lemon juice. Pat the garlic and rosemary evenly all over the surface of the meat. Season the meat with salt and pepper and place the lamb in a roasting pan.
 
Roast the lamb for 20 minutes. Reduce the oven temperature to 325°F. and continue to roast (general rule is 30 minutes per pound) 2 to 2½ hours, or until meat thermometer inserted into center of the roast registers 145 to 150°F.
 
Remove the lamb from the oven and allow to rest for about 15 minutes before carving (the temperature will continue to rise about 5 or 6 more degrees).

leg of lamb roast sliced on cutting board

Slice and serve!

rosemary and garlic leg of lamb roast sliced on cutting board

Note about Leg of Lamb:

The weight of a leg of lamb can vary from 4 to 6 pounds (typically). Cooking time will vary depending on size, as will the number of servings.

sliced lamb on cutting board

Lamb is wonderful to serve with mashed potatoes or Greek Lemon Potatoes and your favorite veggie. It’s a good recipe for an Easter dinner (or another holiday), and it’s a nice meal to make for guests too. Enjoy!

sliced leg of lamb on plate with fork and mashed potato

The Best Lamb Recipes:

sliced leg of lamb roast on platter
4 from 2 votes

Rosemary and Garlic Leg of Lamb Roast

This simple, slow-roasted leg of lamb is perfect for a holiday meal or any other special occasion.
Prep: 15 minutes
Cook: 2 hours 30 minutes
Total: 2 hours 45 minutes
Servings: 8 servings
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Ingredients

Instructions 

  • Preheat oven to 450°F.
  • Using your hands, rub the lamb all over with lemon juice. Pat the garlic and rosemary evenly all over the surface of the meat. Season the meat with salt and pepper and place the lamb in a roasting pan.
  • Roast the lamb for 20 minutes. Reduce the oven temperature to 325°F. and continue to roast (general rule is 30 minutes per pound) 2 to 2½ hours, or until meat thermometer inserted into center of the roast registers 145 to 150°F.
  • Remove the lamb from the oven and allow to rest for about 15 minutes before carving (the temperature will continue to rise about 5 or 6 more degrees).

Notes

  • The weight of a leg of lamb can vary from 4 to 6 pounds (typically). Cooking time will vary depending on size, as will the number of servings.

Nutrition

Serving: 1serving, Calories: 328kcal, Carbohydrates: 2g, Protein: 52g, Fat: 11g, Saturated Fat: 4g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 5g, Cholesterol: 160mg, Sodium: 1028mg, Potassium: 754mg, Fiber: 1g, Sugar: 1g, Vitamin A: 25IU, Vitamin C: 4mg, Calcium: 26mg, Iron: 5mg

Nutrition information is automatically calculated, so should only be used as an approximation.

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4 from 2 votes (2 ratings without comment)

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8 Comments

  1. David Bilinsky says:

    This was the best roast lamb recipe that we have ever tried.  It turned out fabulous – tender, juicy and just tasting incredible.  Easy too! Thank you!

  2. Jessica says:

    Do you cover with foil after the first 20 mins, or at all?

    1. Lori Lange says:

      Not at all.

  3. Clemence says:

    The seasoning was great; however, 30 min per pound was way too long for a lamb prepared to medium rare, which is the way my family likes it. I should have noticed that the meat temperature wasn’t mentioned in the recipe.

  4. Karen Fitch says:

    In the oven now — adding some potatoes to roast as well!

  5. jaden says:

    For dinner tonight!

    1. Lori Lange says:

      Cool- hope ya like it as much as we do!