01 - Lay out the 4 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 layered tomatoes with 1/4 teaspoon kosher salt and 1/8 teaspoon freshly ground black pepper.
05 - Tuck 3-4 fresh basil leaves atop the seasoned tomatoes on each sandwich for added freshness and aroma.
06 - Place the remaining bread slices on top, mayonnaise side down, and gently press each sandwich together.
07 - Using a bread knife, cut each sandwich in half diagonally or straight down the center. Serve immediately for optimal texture and flavor.