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Lamb Sirloin Roast

March 29, 2017 by Maureen 50 Comments

Lamb sirloin roast with rosemary and thyme.

This little roast is a go-to meal when I’m craving lamb. It’s enough for two ordinary appetite people or one hungry person and it cooks in 20 minutes.

I start off with slicing garlic and cutting some rosemary sprigs from out back and then getting out some olive oil, salt, pepper, dried thyme and dried rosemary.

preparing a lamb sirloin roast

Drizzle olive oil on the lamb and rub it all over both sides. Peel and slice a clove of garlic and then with a sharp paring knife, poke holes in the lamb. Slide a slice of garlic into each hole and follow that with the end a sprig of rosemary. Sprinkle with salt, pepper, thyme and dried rosemary and you’re done all the work.

While the lamb comes to room temperature, preheat the oven to 200C/400F and when the oven is ready, this little pillow of lamb goodness will be ready for the oven. Roast for 20 minutes if you like your lamb medium rare and 25 minutes if you like it more well done. Always test the internal temperature of your lamb with a thermometer.

  • Rare = 48-54C/120-130F
  • Medium Rare = 54-60C/130-140F
  • Medium = 60-66C/140-150F
  • Well Done = 66-74C/150-165F

Lamb sirloin roast on a cutting board.

I think I need to choose a better knife to cut the meat with. Sorry about that. I was really hungry.

With the grilled potatoes, wilted spinach with mashed roasted pumpkin on top – this was a mighty nice meal. When I lived in the states, I rarely ate lamb but here in Australia it’s on the menu often. Do you like lamb?

4.5 from 16 reviews
Lamb Sirloin Roast
 
Print
Prep time
10 mins
Cook time
20 mins
Total time
30 mins
 
This is an easy and quick meal, especially if you're cooking for one or two
Author: Maureen Shaw
Recipe type: Main
Cuisine: Australian
Serves: 2
Ingredients
  • 1 lamb sirloin roast
  • 1 teaspoon olive oil
  • ¼ teaspoon dried thyme
  • 4 sprigs fresh rosemary
  • ½ teaspoon dried rosemary
  • salt and pepper
Instructions
  1. Rub olive oil over both sides of the lamb
  2. Slice garlic into thin pieces and then with a sharp paring knife, poke holes in the lamb, then slide one garlic slice in each hole nad follow that with an end piece of fresh rosemary.
  3. Grind salt and pepper over the roast, then sprinkle the rosemary and thyme.
  4. Preheat oven to 200C/400F
  5. Leave lamb to come to room temperature while oven is heating.
  6. Place lamb into the oven and cook for 20 minutes - check internal temperature with a thermometer.
  7. Serve with vegetables or salad and a little mint sauce.
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3.5.3226

 

Filed Under: Recipes Tagged With: lamb, lamb roast, sirloin

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