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+ servings
Greek leg of lamb roast on a bed of potatoes and fennel, in a black baking dish.
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5 from 3 votes

Slow Roasted Greek Leg of Lamb Recipe with Citrus

This slow-roasted Greek Leg of Lamb Recipe with citrus and vegetables is simply incredible. It’s juicy, fall-apart tender, and perfect every time. This one-pan Greek lamb roast is the perfect recipe for Sunday roast or any special occasion throughout the year.
Prep Time10 minutes
Cook Time4 hours 50 minutes
Total Time5 hours
Course: dinner
Cuisine: Greek
Keyword: christmas, citrus, dinner, easter, greek easter, greek lamb, lamb, lamb leg, leg of lamb, lemon, main dish, orange, oven baked, slow roasted, slow roasted leg of lamb, thanksgiving
Servings: 8 people
Calories: 307kcal

Ingredients

  • 4.4 lb leg of lamb 2kg
  • 2 oranges juiced (3/4 cup/177ml)
  • 1 lemon juiced (1/4 cup/60ml)
  • 1 tablespoon yellow mustard
  • 1 tablespoon garlic powder
  • 2 tablespoons thyme dried or fresh
  • 2 tablespoons salt
  • 1 tablespoon ground black pepper
  • 2 tablespoons honey
  • 4 tablespoons olive oil

Optional Veggies (switch it up if desired!)

  • 6 medium potatoes optional (see note 2)
  • 1 fennel root optional (see note 2)
  • 3 medium onions optional (see note 2)

Instructions

**Prep time does not include marinating overnight**

    Prepare the marinade (the night before):

    • Add orange juice, lemon juice, mustard, garlic powder, thyme, sea salt, black pepper, olive oil, and honey together in a large freezer bag.
    • Close the bag and shake well/squeeze to combine.
    • Add the leg of lamb to the bag and marinade it in the fridge overnight.

    The next day:

    • Preheat the oven to 200 degrees C/392 degrees F.
    • Remove the lamb from the zip lock bag and place lamb in a large baking dish or a large roasting pan without the marinade. Keep marinade at the side.
    • Bake the lamb for 20 minutes.
    • Remove the lamb from the oven after 20 minutes and reduce the heat to 140°C/284°F.
    • Pour 3/4 of the marinade over the lamb, cover the pan with aluminum foil or a lid if it has one, and cook for 1.5 hours.
    • Take the lamb out of the oven and remove the aluminum foil or lid. Carefully turn the lamb over, re-cover it with the aluminum foil or lid, and cook for another 1.5 hours.
    • While the leg of lamb is slow roasting, prepare your vegetables.
    • Take the slow-roasted leg of lamb out of the oven. Peel back the foil or lid and add the vegetables and remaining marinade to the pan. 
    • Cook for 1 hour covered with aluminum foil.
    • Remove the foil or lid and cook for 30 minutes uncovered.
    • Check the internal temperature with a meat thermometer. I aim for 65-70°C/150-160°F which is medium-medium well done.
    • Make sure the lamb rests for 10 minutes before slicing it with a sharp knife on a cutting board. Allowing it to rest keeps the meat nice and juicy.

    Notes

    1. Cooking times: Cooking times will vary for different sizes of lamb legs. The best way to check if it's done is by inserting a meat thermometer.
    2. Switch up the vegetables: Any roasting vegetables will work for this recipe. See the full post for a few ideas, including low-carb options.

    Storage instructions

    Allow the meat and vegetables to cool to room temperature and store any leftover Greek-style roast lamb and veg in an airtight container in the fridge for up to 4 days.
    Reheat in the microwave or oven until heated through.
    You can also freeze this slow-cooked lamb for later. Freeze it in a freezer-safe container or freezer bag for up to 3 months. Thaw completely before reheating.

    Nutrition

    Calories: 307kcal | Carbohydrates: 11g | Protein: 33g | Fat: 14g | Saturated Fat: 4g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 8g | Cholesterol: 101mg | Sodium: 1864mg | Potassium: 572mg | Fiber: 2g | Sugar: 8g | Vitamin A: 165IU | Vitamin C: 27mg | Calcium: 40mg | Iron: 4mg