There is no recipe for this. Well...there probably is, but you don't need one. Actually...please don't go looking for one.
Small Bocconcini (fresh mozzarella)
To add some extra flavor there are so many options,
Salt and Pepper
Drizzle with Balsamic
Brush mozza with pesto
and so on.
Super easy, perfectly bite size, so much flavor....not to mention really pretty to serve up.