Remove the fresh mozzarella from its brine (don't rinse it!) and slice it to a similar thickness as the tomatoes.
Arrange the tomatoes and mozzarella together on a plate and add the basil leaves (if they're whole, tuck them in between the tomatoes and cheese, and if they're chopped, sprinkle them on top).
Drizzle the olive oil and balsamic on top and add the salt and pepper to taste.
To make with cherry tomatoes and mini mozzarella balls:
Chop the tomatoes in half and keep the mozzarella balls whole. Add them to a bowl.
Add the other ingredients, toss, and serve.
Notes
Storage Instructions
We recommend enjoying this salad fresh right after it's made. If you need to store leftovers, cover them with plastic wrap or place them in an airtight container and store them in the fridge for up to 24 hours.