Begin by preheating your grill. Close the lid and turn the temperature setting to Medium-High (between 400 and 450 degrees F). Allow the grill to preheat for 10-15 minutes while you prepare your burgers. Separate the pound of ground beef into quarters, then each quarter into halves so you have 8 equal portions of meat.
Press four of the portions into small bases and the other four into flat patties.
Fill each of the four bases with 1/4 cup bacon mac & cheese. Top with 1/8 cup of the extra shredded cheddar and season with salt and pepper.
Gently lay the flat patties on top of the bacon mac & cheese filled bases and press the edges together to form a tightly sealed burger. Try not to leave any holes, or the cheese will leak out and make a huge mess! Season with your favorite hamburger seasoning or garlic salt and pepper.