Preheat a griddle or large frying pan until hot and brush with the vegetable oil.
1 tbsp vegetable oil
Form the beef mince into 4 patties and sprinkle on both sides with the salt and pepper.
450 g (1 lb) minced (ground) beef, ½ tsp salt, ¼ tsp ground black pepper
Place the patties on the griddle and cook, for about 3 minutes, until browned, then turn the burgers over and place a slice of cheese on top of each burger.
4 slices burger cheese
Cook for a further 1-3 minutes, until the burger is cooked through.
Take the burgers off the griddle when cooked and leave to rest for 2-3 minutes.
Whilst the burgers are resting, mix the sauce ingredients together and put to one side.
8 tbsp burger Sauce
To assemble the burgers. Place the lettuce on the bottom of two of the burger buns followed by slices of tomato. Add a burger to each bun.
2 brioche buns, large handful curly lettuce, 2 large tomatoes
Top with onion slices and another burger.
¼ brown onion
Drizzle over the sauce and place the top of the bun on each burger and serve.
Notes
Nutritional Information is per burger, excluding the burger sauce (you can find nutritional information for my sauce recipe on that post).