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BBQ lamb with caramelised onions, butter beans and gremolata

02 May 2017

Food writer Genevieve Taylor and Countryfile presenter Adam Henson demonstrate a delicious BBQ lamb leg steak recipe in this video, served with caramelised onions, butter beans and gremolata.

BBQ lamb leg steaks
BBQ lamb leg steaks with caramelised onions, butter beans and gremolata

Cooking time

40 minutes




  • 4 lamb leg steaks (about 150g each)
  • A little rapeseed oil
  • Salt and freshly ground black pepper

For the gremolata

  • Large bunch parsley, leaves and finer stems, finely chopped
  • Finely grated zest 2 lemons
  • 2 cloves garlic, very finely chopped
  • A good pinch of sea salt flakes

For the butter beans

  • 2 large red onions, sliced
  • 2 tbsp rapeseed oil
  • 25g butter
  • 2-3 sprigs thyme
  • A bayleaf
  • 1/2 tsp smoked paprika
  • 200g cherry tomatoes, quartered
  • 2 tins butter beans, drained and rinsed
  • Juice of 1 lemon
  • Salt and freshly ground black pepper


Lamb seems to have fallen a little from fashion as a barbecue favourite - so here is a succulent recipe to inspire! Gremolata is an incredibly easy post-cooking ‘sprinkle’ of lemon zest, finely chopped garlic and flatleaf parsley that adds a fresh zing to the finished dish.

At the barbecue

Fire up one of the burners to medium low and set a heatproof frying plan (no plastic handles) on to the grill bars. Add the olive oil and butter and allow it to melt. Add the onions, thyme and bayleaf, stirring together. Close the lid of the barbecue and leave to cook gently for about 30 minutes, stirring once or twice to make sure its cooking evenly. They want to be really soft and almost melting, but not with too much colour, so keep the heat fairly low.

In the kitchen

Make the gremolata by simply mixing everything together really well in a small bowl. Set aside.

At the barbecue

Use a little salt to crush the garlic to a paste, then add to the cooked onions, along with the smoked paprika and season well with black pepper, stirring over the heat for a minute or so. Turn the heat up to medium high and add the tomatoes and beans and stir well, allowing them cook whilst you cook the lamb.

Fire up another burner to high, and leave it to get hot for a few minutes - this won’t take too long as the barbecue is already warm.

Drizzle a little oil over the lamb steaks, and season with salt and pepper. Lay them onto the hot grill bars and cook for 3-4 minutes each side. You can check the steaks are cooked how you like them by using a thermometer. Stick the probe into the thickest part of the steak - rare will be 50°C, medium will be 60°C, and well done will be 70°C. Remove the steaks and allow then to rest on the warming rack for a few minutes.

Check the seasoning in the beans, adding a little extra salt and pepper if necessary, and squeezing in a little lemon juice to taste.

To serve, add a pile of beans to warmed plates, and top each with a lamb steak. Sprinkle over a little gremolata and serve the rest in a bowl alongside.

BBQ lamb leg steaks

Visit our BBQ recipe section for more delicious cooking ideas


The opinions expressed are those of the author and are not held by Saga unless specifically stated. The material is for general information only and does not constitute investment, tax, legal, medical or other form of advice. You should not rely on this information to make (or refrain from making) any decisions. Always obtain independent, professional advice for your own particular situation.