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  • Five ingredients or fewer

Slow-cooked leg of lamb

Raw lamb with herbs in a dish, man smiling; text "5 HOURS LATER..." alongside a cooked, browned lamb. Blue kitchen background.

By Tom · Updated

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  • About 5 hours 10 min
  • Easy

Whether you're cooking for a holiday, Sunday roast, or just want to master lamb recipe, this is the one to try. This fall-apart leg of lamb is packed with flavour, beautifully crusted on the outside, and melt-in-your-mouth tender inside.

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The recipe

Slow-cooked leg of lamb

Whether you're cooking for a holiday, Sunday roast, or just want to master lamb recipe, this is the one to try.

  • 10 min prep
  • 5 hours cooking
  • Easy

Times and difficulty are our estimates from the method, not stopwatch figures.

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Measurements

Ingredients

Slow roast leg of lamb

Tick things off as you go — they stay ticked if you close the page.

A dotted underline means the amount has been rounded to something you can measure.

Method

  1. Step 1

    Begin by drizzling the leg of lamb (1 lamb) with olive oil and rubbing it into the meat all over. Next, season it generously with salt and black pepper and rub that into the meat.

  2. Step 2

    Using a paring knife, make small cuts into the lamb and place in a piece of rosemary (4 sprigs) and a slice of garlic (3 garlic). Repeat until the whole leg of lamb (1 lamb) is studded with rosemary and garlic.

  3. Step 3

    Place the halved onions (3) in an oven tray or dish, covering the bottom. Add any remaining garlic (3 garlic) and rosemary (4 sprigs), then place in the mint. Lay the leg of lamb (1 lamb) on top and pour the water (400 ml) into the bottom of the dish.

  4. Step 4

    Cover with a sheet of parchment paper and then seal it in with a sheet of foil. Roast in a preheated oven at 160°C for 4 hours.

  5. Step 5

    After 4 hours, remove the foil and parchment paper, turn the oven up to 200°C and roast for a further 30 minutes to crisp up.

  6. Step 6

    Serve and enjoy.

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Questions people ask

How long does slow-cooked leg of lamb take?

About 5 hours 10 min from start to finish, of which 10 min is prep and 5 hours is cooking. That figure is worked out from the method rather than timed with a stopwatch, so give yourself a little more the first time.

How much does this make?

The original recipe did not state a yield, so nothing has been invented for it. The scale control on the recipe card multiplies the quantities instead, which is the honest version of the same thing.

Can I see the ingredients in ounces and pints?

Yes. The metric and imperial switch on the recipe card converts every quantity, rounded to amounts you can actually weigh or measure rather than to four decimal places. Your choice is remembered for every recipe on the site.