Slice tomatoes into 1/4" rounds. Slice cheese into 1/4" rounds, or slices the same size at the tomatoes. Wash and dry the basil, pulling off the freshest leaves. Lay out salad on a plate: tomato, basil and cheese; layering and fanning. Dress the salad just before serving. Sprinkle with pinches of salt and pepper. Lightly splash on olive oil, then a bit of balsamic vinegar. Serve.