Lightly toast your buns face down until crispy
While your buns are toasting heat a skillet with your oil and season your patty’s with your salt and pepper.
Cook your patty’s for 10-15 mins flipping occasionally, while your are doing this make your burger sauce( only use 5g of onion)
Take your cooked patty’s and start to assemble your burger, using the cheese lettuce and remaining onion. You can add any other ingredients you like.