01 - Preheat a skillet or griddle over medium heat.
02 - Spread butter evenly on one side of each bread slice.
03 - Place two bread slices, buttered side down, onto the preheated skillet or griddle.
04 - Layer each bread slice with 1-2 slices of cheddar cheese, followed by the cooked bacon, tomato slices, and a sprinkle of freshly ground black pepper.
05 - Top the fillings with the remaining cheese, then add the other two bread slices, ensuring the buttered side faces upwards.
06 - Grill for 3-4 minutes per side, pressing lightly with a spatula, until the bread achieves a golden-brown hue and the cheese is fully melted and gooey.
07 - Remove the grilled sandwich from the skillet. Allow it to rest for 1 minute before slicing and serving warm.