The quality of this salad is dependent upon the freshest of ingredients. For best results use home-grown tomatoes and fresh mozzarella cheese (not the harder, grating cheese). This is a good time to bring out your best extra virgin olive oil.
Slice the tomatoes into 1/4" thick slices and arrange on a plate or platter. Top each slice with a thin slice of the fresh cheese. You can tuck a leaf of basil under each piece of cheese or arrange it alongside the tomatoes.
Drizzle olive oil over the top then sprinkle with salt and freshly ground pepper.