Combine ground beef, worcestershire sauce, granulated garlic, onion powder, paprika and ground mustard in a bowl. Mix just until combined. Don't over mix or the burgers will be tough.
Once mixed form the beef into 8 (2 ounce) round balls. Cover and refrigerate for at least 20 minutes. But can be done hours in advance.
When ready to cook heat a cast iron skillet (or griddle) to medium-high heat. Place chilled burger rounds onto griddle and use a burger press to smash them down as flat as they will go. Sprinkle with salt and pepper and allow to cook for 2 -3 minutes or until the edges start to brown and crisp.
Flip burgers and add cheese, if using to the top of one patty. Continue cooking until cheese starts to melt. Place the other patty on top of the cheese covered patty.
Toast burger buns on the same griddle that you cooked the burgers by placing them cut side down into the warm skillet. Heat for 30 seconds to 1 minute or until toasted to desired doneness.
Assemble burgers with desired toppings and serve.
Notes
Depending on your burger press, using parchment paper (or non-stick spray) between the patty and the press may help prevent the patty from sticking to the press. Nutrition information for estimation purposes only and will vary greatly depending on the toppings you choose.