01 - Bring a large pot of salted water to a boil. Add orzo pasta and cook according to package directions until al dente, approximately 8-10 minutes. Drain thoroughly in a colander and rinse under cold running water to halt cooking. Transfer to a tray and allow to cool completely.
02 - In a large mixing bowl, add the cooled orzo, halved cherry tomatoes, halved mozzarella balls, and torn fresh basil leaves. Toss gently to distribute evenly.
03 - In a small bowl or glass jar, whisk together extra-virgin olive oil, balsamic vinegar, Dijon mustard, sea salt, and black pepper until emulsified and smooth.
04 - Pour the balsamic vinaigrette over the orzo mixture. Using a large spoon or salad tongs, fold gently until all ingredients are evenly coated with dressing.
05 - Taste and adjust seasoning with additional salt or pepper if desired. Transfer to a serving dish and garnish with fresh basil leaves and cracked black pepper. Serve chilled or at room temperature.