Ever wanted to know exactly how to roast a leg of lamb?
It’s easier than you think! Here’s how to make a roast like you’ve been doing it for years and years. Adjust your cooking time according to the size of your leg of lamb. We have some pointers below.
How to Roast a Leg of Lamb
Recipe by Stay at Home Mum
Course: Lamb, Meats, Our favourite recipes, Recipes
Servings
+
–
4
servingsPrep time
30
minutesCooking time
40
minutesCalories
300
kcalTotal time
1
hour10
minutes
Cook Mode
Keep the screen of your device on
Ingredients
1 number Lamb Leg
1 tbsp Crushed garlic- or two garlic cloves
0.5 tsp Dried rosemary
0.5 tsp Dried thyme
1 tsp Salt
1 tbsp Olive oil
Directions
- Preheat your oven to 180 degrees.
- Place the leg of lamb into a baking dish.
- Using a sharp knife, poke some 1 cm deep pockets evenly over the roast (about six of them).
- Poke into each hole a little of the crushed garlic and a little of the dried rosemary.
- Pour the olive oil over the roast and massage into the skin.
- Sprinkle the dried thyme and salt over the top.
- As a general rule, allow 15 minutes at 180 degrees for every 500 grams of meat. Invest in a cheap meat thermometer – you are guaranteed perfectly cooked roasts every single time and it takes the guess work out of cooking times.
- How long to cook your roast for:
- Roast according to how you prefer your meat done below:
- Medium Rare = 1.25 hours
- Medium = 1.5 hours
- Well Done = 1.75 hours
- The shank (the pointy bit) will cook faster than the rest of the roast, to prevent over-browning, cover with aluminium foil to protect it. When the lamb is done the way you like it, remove from the oven, cover in foil and allow to rest for 10 minutes before serving.
- Recipe Hints and Tips:
- Serve with roast vegetables, classic potato bake or homemade gravy.
Clare Whitfield
Chief Editor
Clare Whitfield is the Editor of Stay at Home Mum and a recognised voice in practical home management for Australian families. Based in the northern suburbs of Sydney, she balances editorial leadership with life as a stay at home mum to two school age children. Her background in home economics and more than a decade of experience in recipe development, family budgeting, and household systems inform her work.

Hi, thanks for bringing that up! It’s 160°C. Give us a min to rectify this oversight so it won’t confuse…