Ingredients
- red onion 1 small, tough outer layers peeled and discarded
- steak mince 400g
- celery salt 1 tsp
- flat-leaf parsley a handful, finely chopped
- prosciutto 4 slices
- oil for frying
- raclette (or use another melty cheese, such as taleggio) 4 slices
- shredded lettuce to serve
- brioche-style burger buns 4, toasted
BURGER SAUCE
- mayonnaise 4 tbsp
- sweet american mustard 3 tsp
- cornichons 6, chopped
- pickled onions 4, chopped
Method
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Step 1
Grate the onion with a box grater.
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Step 2
To make the sauce, mix the mayo, mustard, cornichons and pickled onions and season.
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Step 3
To make the burgers, put the mince, onion, celery salt and parsley in a bowl. Season with pepper and mix well, then divide into four balls. Form each ball into a thin patty – they will shrink as they cook so make the burgers larger than your buns.
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Step 4
Grill the prosciutto for 2-3 minutes until crisp, then take out but leave the grill on.
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Step 5
Heat a large, heavy frying pan to hot. Oil and season the burgers then cook for 2 minutes each side until golden and cooked through.
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Step 6
Put a slice of raclette on each burger and grill for 2 minutes on high until bubbling.
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Step 7
Add some lettuce to each bun. Sit a burger on top, add the crispy prosciutto, spoon over the sauce and put on the bun top.
Nutritional Information
- Kcals 681
- Fat 42.7g
- Saturates 9.9g
- Carbs 33.5g
- Sugars 7.7g
- Fibre 3.7g
- Protein 38.9g
- Salt 4.1g
