Preheat your grill or stovetop grill pan to medium-high heat.
In a large bowl, mix together the ground beef, cooked macaroni, cheddar cheese, chopped bacon, salt, and pepper until well combined.
Divide the mixture into 8 equal portions and shape into patties.
Place a slice of cooked bacon on top of 4 of the patties, then top each with another patty, pressing the edges to seal and form a stuffed burger.
Grill the burgers for about 5-6 minutes per side, or until cooked to your desired doneness.
Toast the burger buns on the grill for a minute or two.
Assemble the burgers on the buns with lettuce, tomato, and any other desired toppings.
Serve hot and enjoy the deliciousness of a stuffed bacon mac 'n' cheese burger!
