01 - Lightly toast the bread slices to achieve a golden color and a firm texture that will hold the toppings without becoming soggy.
02 - Spread the mayonnaise evenly over one side of each bread slice to ensure full coverage.
03 - Arrange the sliced tomatoes over two of the bread slices, overlapping them slightly to create an even layer.
04 - Sprinkle the tomatoes generously with salt and freshly ground black pepper to enhance their natural flavor.
05 - Layer fresh basil leaves on top of the tomatoes. If desired, drizzle with extra-virgin olive oil and balsamic vinegar.
06 - Top with the remaining bread slices, mayonnaise side down. Cut sandwiches in half and serve immediately.