First prep burgers. Lightly form meat into 4 burger patties. Season with salt and pepper and allow to rest in the fridge until ready to use. Note* I like to make this early in the day and then take them out of fridge about 20 minutes before cooking.
Make guacamole by combining all ingredients in a bowl. Set aside until ready to use. Do the same with the Spicy Russian dressing.
Heat up a cast iron skillet (or grill, if using) and brush olive oil lightly on the burger patties. Use your thumb and make a slight indent in the center of each burger patty. This helps preventing them from bulking up as they cook.
Cook burgers on each side for about 3-4 minutes or until desired doneness. About 30 seconds before done, add 2 slices of cheese on top of each burger until melted. You can also cover with a lid to help melt faster. When done, remove to a plate and allow to rest.
In the same pan, cook the hatch chiles until warmed through. When done, place on top of burger. Also, use the same pan to toast the burger buns.
To assemble, spoon guacamole on bottom bun, then burger with cheese and hatch chile, Spicy Russian dressing and top bun. Serve with yrou favorite peppers and pickles.