Preheat oven to 180°C/Gas Mark 6. Place burgers onto a preheated baking tray and cook in the centre of the oven for 15-20 minutes, turning halfway through cooking.

Whilst the burgers are cooking lightly toast the cut side of the brioche buns on a hot griddle until slightly charred.

Prepare the onion, gherkins and tomatoes and place in small bowls ready to assemble.

Remove the burgers from the oven and top each one with a slice of cheese.

Serve in the brioche buns topped with the sliced red onion, gherkins, and tomatoes. Enjoy with coleslaw and your favourite sauce.

Top Tip: Wrap the burgers in foil before placing in the oven and open up for the last five minutes of cooking for and extra juicy burger, just like Mary does at home.