01 -
In a large bowl, combine ground beef, sour cream, ranch dressing powder, crumbled bacon, shredded cheddar cheese, kosher salt, and coarse black pepper. Mix gently to incorporate; avoid overworking the mixture.
02 -
Preheat a griddle or cast iron pan over medium-high heat and brush lightly with neutral oil. Shape meat mixture into three equal patties. Cook patties to desired doneness, turning carefully as the mixture is delicate.
03 -
In a small bowl, mix mayonnaise, grainy mustard, and chili sauce together. Set aside for assembly.
04 -
Toast the burger buns on the griddle until golden and warmed.
05 -
Spread prepared sauce onto the buns. Layer with lettuce and tomato, place the cooked patties on top, and finish with the top buns.