Step 1

Add the panko breadcrumbs, parsley, Dijon mustard, beaten egg, salt and pepper and minced beef into a large bowl.

Step 2

Mix well using your hands until ingredients are well combined.

Step 3

Divide into 4 chunks, then mould into thick round patties.

Step 4

Drizzle the olive oil over the patties and refrigerate until needed.

Step 5

Preheat a large frypan over a high heat for about 3 minutes, then turn down the heat to medium.

Step 6

Place your patties gently onto the hot frypan and cook for 4-5 minutes (depending on preference) on one side only.

Step 7

Flip your patties, then place 2 pieces of Swiss cheese on top of the cooked side. Cover with a lid for another 4-5 minutes and allow the other side to cook, while the cheese melts. Once cooked, remove from the heat and set aside.

Step 8

Halve brioche buns and place flat sides down on a separate frypan over low heat, until each bun is warm to touch.

Step 9

Place one lettuce leaf on the base of each bun.

Step 10

Add as many tomato slices as you'd like on top of the lettuce.

Step 11

Place each pattie with the melted cheese on top of the tomato slices.

Step 12

Add red onion and dill pickles to your liking on top of the patties.

Step 13

Squirt tomato sauce and American mustard to your liking over the dill pickles and red onion.

Step 14

Place the lid of the bun on top. Enjoy!