Red Onion and Chive Beef Burger in Portobello ‘Buns’

Prep time: 15 minutes
Cooking time: 15 minutes
Serves: 4

Making your own beef patty is easier than you think with our useful guide to building your own burger. Prepared in only 15 minutes, these are super easy to make but filled with gorgeous flavours!

INGREDIENTS

  • 8 portobello mushrooms, stalks removed
  • 600g beef mince
  • 4 tbsp chopped chives
  • 1 egg, lightly beaten
  • 30g breadcrumbs
  • 1 red onion, finely sliced
  • 1 cucumber, deseeded and thinly sliced lengthwise
  • 25g sugar
  • 20g salt
  • 75ml vinegar
  • 25ml water
  • Rocket leaves to serve
  • Olive oil
  • Salt and pepper to season

METHOD

  1. Put the beef, chives, egg, onion, breadcrumbs and a pinch of salt and pepper in a mixing bowl. Mix well with your hands then divide into four and shape into burgers. Put on a plate and put in the fridge to chill for about half an hour.
  2. Put the sliced cucumber in a glass bowl. Heat the sugar, water, salt and vinegar in a pan until dissolved then leave to cool before pouring over the cucumber. Leave to pickle for about 20 minutes.
  3. Season and char the outside of each mushroom on a skillet or barbecue then set aside. Cook the burgers to your liking on the chargrill.
  4. Drain the cucumbers from the pickling liquid.
  5. Put a burger on top of a mushroom ‘bun’, add a little pickled cucumber and a handful of rocket. Put the top of the ‘bun’ on and serve with ketchup and mustard.
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