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Lamb shoulder with vegetables on a tray

Slow Cooker Lamb Shoulder

  • Author: caroline
  • Total Time: 8 hours 15 minutes
  • Yield: 4 1x


This slow cooker lamb shoulder is an absolute show-stopper. Ridiculously pull-apart tender lamb drizzled in rich gravy. No one will know it was so easy!

A 1kg boneless lamb shoulder will serve around 4 people.


  • 1 large onion, sliced into eighths
  • 1/2 bulb garlic, broken into pieces
  • 2 sprigs rosemary
  • 1kg boneless lamb shoulder (see note 1)
  • 500ml beef or lamb stock
  • 2 tbsp mint sauce
  • 1 tbsp cornflour and 2 tbsp water


  1. Place the onion, garlic and rosemary in the bottom of the slow cooker, spreading the onion out evenly.
  2. Pat the lamb dry with some paper towel and then rub salt and pepper all over the joint. Place it on top of the onion in the slow cooker.
  3. Pour the stock around the lamb and place the lid on the slow cooker.
  4. Cook on low for 8-10 hours or on high for 4-5 hours.
  5. Preheat the oven to 200C/200F. Transfer the lamb to a baking tray and bake for 20 minutes. (see note 2)
  6. While the lamb is in the oven make the gravy. Skim any fat off the juices in the slow cooker or use a fat separating jug. Strain the gravy into a saucepan and then boil it down until reduced by half (you want around 1 cup of the juices left). 
  7. Reduce the heat to medium-low and stir in the mint sauce.
  8. Mix the cornflour and water until you have an even texture. Pour the cornflour into the sauce slowly, stirring consistently. Cook for a further couple of minutes until the sauce is thickened. 


  1. You can use bone-in or boneless lamb for this recipe, but you will need to adjust the weight to allow for the bone. To serve 4 you need around 1kg of boneless lamb or around 1.5kg of bone-in.
  2. Be careful when removing the lamb from the slow cooker, as it may have become so tender that it falls apart! 
  3. Leftovers can be kept in the fridge for up to 3 days. 
  • Prep Time: 15 minutes
  • Cook Time: 8 hours
  • Category: Dinner
  • Method: Slow Cooker
  • Cuisine: British


  • Serving Size: 1
  • Calories: 730
  • Fat: 59g
  • Carbohydrates: 5g
  • Protein: 43g

Keywords: lamb shoulder, british, dinner, easy, slow cooker, meat, indulgent