This garlic and rosemary roast leg of lamb is an easy oven-baked recipe that delivers juicy meat, golden potatoes, and rich pan juices, perfect for Easter, Christmas, or a simple Sunday roast at home.
Garlic Rosemary Leg of Lamb Recipe (Simple & Flavorful)
This roast leg of lamb is inspired by the way my mother would make it every Christmas or Easter. The aroma of garlic and rosemary filling the house always meant a special meal was coming, one that brought everyone to the table. The potatoes and onions roasted underneath were my favorite part, soaking in the flavors while the lamb turned tender in the oven.
I've kept her simple approach, but added a honey glaze at the end for a glossy finish that balances the richness beautifully. Now, when I make it for my own family, whether it's a holiday or just a weekend dinner, it brings those memories right back. It still feels like a celebration every time.
Ingredients
You'll find the exact measurements in the recipe card, but here's a closer look at a few of the ingredients and why I use them.
- Bone-In Leg of Lamb: I always choose a bone-in leg because it stays juicier and carries more flavor as it roasts; it is exactly how my mother used to make it for the holidays.
- Olive Oil, White Wine & Water: A mix of extra virgin olive oil and white wine keeps the lamb tender and adds richness to the pan. A little water ensures nothing dries out while everything cooks slowly.
- Potatoes, Onions, Garlic & Rosemary: These roast right under the lamb and soak up every drop of its juices. Rosemary gives that classic aroma, and whole garlic cloves turn soft and buttery in the heat.
- Honey & Vinegar Finish: My own small twist, the glaze gives a beautiful shine on top and adds just enough sweetness to balance the richness of the meat.
How to Make Roast Leg of Lamb
You can find the complete printable recipe with measurements below, but for now, here's a quick overview of how it goes:
1. Prep the Lamb and Season Well: Bring the lamb to room temperature for about 1 hour, then place it in a roasting pan. Pour over the white wine, drizzle with extra virgin olive oil, add the water to the pan, and season well with salt and black pepper.
2. Start the Roast Hot for a Juicy Center: Roast at 392°F (200°C) on the middle rack for 1 ½ hours, basting occasionally, and then transfer the lamb to a plate.
3. Roast the Vegetables Underneath: Add the sliced potatoes, onions, garlic, and rosemary to the roasting pan, place the lamb back on top, and roast for 25 minutes at 355°F (180°C).
4. Finish with a Honey Glaze and Rest: Brush the lamb with the honey vinegar mixture and roast another 25 minutes. Let it rest for 15-20 minutes before slicing and serving with the vegetables.
What to Serve with Roast Leg of Lamb
A simple salad and crusty bread are all you need on the side. The vegetables roasted under the lamb already make this a complete and satisfying meal.
My Tips for Recipe Success
Choose the Best Spot in the Oven: I like keeping the roasting pan on the middle rack; it gives the lamb an even heat all around so the top browns nicely without the bottom overcooking.
Store with the Good Stuff: Leftovers stay much juicier when I store them with a spoonful of pan juices. They reheat the next day beautifully for the easiest lunch or dinner.
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Recipe
Roast Leg of Lamb
Ingredients
- 3 kg Bone-in Leg of Lamb
- 100 ml White Wine
- 50 ml Extra Virgin Olive Oil
- 100 ml Water
- 1½ teaspoon Salt
- ½ teaspoon Black Pepper - Freshly ground
- 4 Potatoes - Sliced
- 2 Onions - Sliced
- 10 Cloves Garlic
- 4 Rosemary Sprigs
- 2 tablespoon Honey
- 1 tablespoon Vinegar
Instructions
- Take the lamb out of the fridge at least 1 hour before roasting.
- Preheat the oven to 200°C/392°F and set the rack to the middle level.
- Place the lamb in a roasting pan, pour the white wine over the meat, drizzle the extra virgin olive oil evenly across the top, and add the water to the pan. Season the lamb with salt and black pepper.
- Roast the leg of lamb for 1 ½ hours, basting occasionally.
- Take the leg of lamb out of the oven and place it on a plate.
- Place the sliced potatoes, sliced onions, garlic, and rosemary in the roasting pan. Return the lamb to the roasting pan over the vegetables and roast for 25 minutes at 355°F (180°C).
- Combine the honey and vinegar in a small bowl, brush the mixture over the lamb, and roast for a further 25 minutes.
- Rest the lamb for 15-20 minutes before slicing and serving with the vegetables.
Notes
Nutrition
Nutritional information is based on third-party calculations and should be considered an estimate only. Actual nutritional content will vary based upon brands used, measuring methods, cooking method, portion sizes, and more.
Sandra says
I made this roast leg of lamb last night, and it was exactly what I hoped for. The meat turned out tender, the potatoes soaked up all the flavor, and the honey–vinegar finish added such a beautiful touch.