01 - Lay out the bread slices on a clean cutting board or flat surface.
02 - Spread mayonnaise evenly on one side of each bread slice using a butter knife or spreader.
03 - Arrange the thinly sliced tomatoes on two of the bread slices, slightly overlapping each piece for even coverage.
04 - Sprinkle the tomato layers evenly with kosher salt and freshly ground black pepper.
05 - Tear or place fresh basil leaves over the seasoned tomatoes for a burst of herbal freshness, if desired.
06 - Top each assembled half with the remaining bread slices, mayonnaise side facing down.
07 - Gently press down on each sandwich and cut in half diagonally or straight down the center. Serve immediately for optimal texture and flavor.