In a large bowl, combine beef, onion, pickles and all other ingredients

Shape the beef mixture into 4 large patties, but do not compact too much. Let beef mixture rest for 30 minutes, covered at room temperature. Press a small indentation in the center of the burger with your thumb.

Heat a grill to medium high heat.

Grill the burgers for 4-5 minutes on one side then flip, do not press the beef, and grill another 2-4 minutes depending on level of doneness you prefer. Do not flip the burgers more than once per side.

When the internal temperature of the burgers is 155, remove from the grill, cover with foil and let rest. The burgers will continue to cook and the internal temp will eventually reach 160.

Serve with buns, tomatoes, and whatever toppings you like.