
Made with AI
Divide the 400g of lean ground beef into 4 equal portions and shape each into a patty about
5 cm thick.
Preheat a grill or skillet over medium-high heat. Season the beef patties with salt and pepper if desired.
Cook the patties for about 3-4 minutes per side, or until they reach your desired doneness.
While the patties are cooking, slice the tomato and red onion into 4 slices each.
Lightly toast the whole wheat burger buns on the grill or in a toaster.
To assemble each burger, place a romaine lettuce leaf on the bottom half of each bun, followed by a cooked beef patty.
Top each patty with a slice of tomato and a slice of red onion.
Drizzle each burger with 1/2 tablespoon of ketchup and 1/2 tablespoon of yellow mustard.
Place the top half of the bun on each burger and serve immediately.