Ingredients
Method
- To make the burgers: heat the olive oil in a pan and cook the onions on a medium heat until soft and transparent in colourll
- When cooked, place in a bowl along with all the ingredients and mix well
- Leave to rest in the fridge for 1 hour, then using your hands, shape into burgers and place onto a slightly oiled tray.
- Grill, fry or barbecue the beef burgers until cooked through.
- While the beef burgers are cooking, grill the crusty rolls until lightly toasted
- Assemble the burgers, adding a good pouring of Tracklements Sweet Mustard Ketchup to taste
Notes
Tracklements Sweet Mustard Ketchup RRP £3.80 for 230ml is available from fine food delis and farm shops nationwide and online at www.tracklements.co.uk