01 -
Generously spread softened butter on one side of each rye bread slice and set aside.
02 -
In a large bowl, thoroughly mix ground beef with black pepper, sea salt, and onion powder until the seasoning is evenly incorporated. Divide the mixture into three equal portions and shape each into a patty matching the dimensions of the bread slices.
03 -
Preheat a nonstick skillet over medium-high heat. Add the patties and sear for 2–3 minutes on each side, flipping gently to maintain their structure. Lower the heat to low, and continue cooking for 5 additional minutes until the interior is uniformly brown with no visible pink.
04 -
Confirm the patties reach an internal temperature of 71°C (160°F) using a digital thermometer for food safety.
05 -
Combine mayonnaise, ketchup, bacon bits, sweet relish, and white sugar in a small bowl. Stir until thoroughly blended and set aside.
06 -
Preheat a second skillet over medium-low heat. Place a slice of buttered bread, butter-side down, onto the skillet. Layer with two slices of cheddar cheese, followed by a cooked beef patty, then two slices of Provolone cheese. Evenly spread sauce on the unbuttered side of another bread slice and place it, sauce-side down, on top of the sandwich.
07 -
Cook each assembled sandwich for 2–3 minutes per side, or until the bread achieves a golden, lightly toasted finish and the cheese is melted.
08 -
Repeat the assembly and grilling steps until all three sandwiches are prepared. Transfer to serving plates and serve immediately.