Cook the Bacon: Heat a skillet over medium heat and add the bacon slices. Cook the bacon until crispy, flipping occasionally to ensure even cooking. Once cooked, transfer the bacon to a plate lined with paper towels to drain excess grease.
Prepare the Patties: Divide the ground beef into 3 equal portions. Shape each portion into a patty, making sure they are slightly larger than the diameter of the hamburger buns. Season both sides of the patties with salt and pepper.
Grill the Patties: Preheat your grill or grill pan to medium-high heat. Brush the grill grates or grill pan with vegetable oil to prevent sticking. Place the burger patties on the preheated grill or grill pan. Cook for about 4-5 minutes on each side, or until desired level of doneness is reached.
Toast the Buns: While the patties are cooking, lightly toast the hamburger bun son the grill or in a toaster.
Assemble the Burgers: To assemble each burger, place a lettuce leaf on the bottom half of each bun. Top with a grilled burger patty, followed by a couple of slices of crispy bacon, some sliced onion, tomato slices, and crumbled blue cheese. Place the top half of the bun over the toppings.
Serve and Enjoy: Serve the Bacon Blue Cheese Burgers immediately while they're hot and juicy. Pair them with your favorite sides like fries, potato salad, or coleslaw for a complete meal.