01 -
Thoroughly butter one side of each slice of bread and set aside.
02 -
Combine the ground beef, ground black pepper, sea salt, and onion powder in a bowl. Mix until the spices are evenly distributed.
03 -
Shape the mixture into three separate patties to match the shape of the bread.
04 -
Preheat a nonstick skillet over medium-high heat. Cook the patties for approximately 2-3 minutes per side. Reduce heat to low and cook for an additional 5 minutes until the center is uniformly brown with no pink remaining.
05 -
Use a digital thermometer to ensure the patties have an internal temperature of 160°F (71°C).
06 -
Mix mayonnaise, ketchup, bacon bits, sweet relish, and white sugar in a small bowl until well-blended, then set aside.
07 -
Heat a second skillet over medium-low heat. Place a slice of bread butter-side down, layer with two slices of cheddar cheese, a cooked patty, and two slices of Provolone cheese. Spread the sauce on the unbuttered side of the second bread slice, then place that slice sauce-side down on top of the cheese.
08 -
Cook the sandwich for 2-3 minutes on each side or until the bread is lightly toasted.
09 -
Repeat the process for the remaining sandwiches. Serve immediately and enjoy.