Grab a large bowl and gently mix together all the ingredients for the burger patties listed in the recipe card. Use your hands or a spatula to combine, making sure not to over mix.
Divide the mixture into 4 equal parts and form into patties. I like to form mine a little larger than the burger buns because they will slightly shrink while cooking.
Allow to rest, room temperature, for at least 10 - 15 minutes. I place mine on a lined baking sheet and let it sit on the kitchen counter.
Place a cast-iron or bottom heavy skillet over medium-high heat. Add butter (or use oil if preferred) and allow to melt, coating the skillet. Add the burger patties (depending on the size of your skillet you may need to work in batches) and sear on each side until a crust forms - about 3 to 5 minutes per side or until your desired internal temperature.
After cooking, remove the burgers and let them rest on a plate for a few minutes before serving. This allows the juices to stay intact, resulting in the best, most flavorful and juicy burger.
Serve with recommended items, toppings, and condiments, if desired.