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Caramelised onion beef burger

Serves   4
Prep time: 10 mins
Cooking time: 30 mins

Burgers are always a family crowd pleaser, and this beef burger is no different. Taken to new heights with golden caramelised onions, peppery rocket and a tangy mustard mayonnaise; say goodbye to takeaways and hello to your new go-to. 

  • Summer BBQ
  • Burgers
  • Beef
  • Lunch
caramelized onion burger




  • 500g beef mince
  • 1 Tbsp worcestershire sauce
  • Pinch of chilli powder
  • 2 brown onions, thinly sliced
  • 2 sprigs thyme 
  • 10g butter
  • 4 slices swiss cheese 
  • 4 brioche burger buns
  • ½ cup mayonnaise 
  • 1 tsp mustard 
  • 2 cups fresh rocket

Shop ingredients online


  1. In a bowl, combine the mince, worcestershire, chilli powder and seasoning. Mix well, and form into 4 patties. Set aside. 
  2. Bring a pan to a low medium heat, and add the onions, thyme and butter. Caramelise for 15-20 minutes or until translucent and golden brown. Season to taste. 
  3. Toast the burger buns by spreading lightly with mayonnaise, then browning in a heated pan. Cook the patties in a hot pan, for 3-4 minutes each side. Once flipped, top with the sliced swiss cheese and leave to melt.
  4. To build the burgers, mix together the mayonnaise and mustard. Spread the buns with the sauce, then top the base with a pattie. Spoon the caramelised onions on top, then follow with rocket. Place the lid on the burger and serve.