01 - Bring a large pot of salted water to a boil. Add orzo pasta and cook according to package directions until al dente. Drain well in a colander and rinse under cold running water to halt cooking. Transfer to a large bowl and allow to cool completely.
02 - Once the orzo has cooled, add halved cherry tomatoes, halved mozzarella balls, and torn basil leaves to the same bowl. Toss gently to distribute ingredients evenly.
03 - In a small bowl or jar, combine extra-virgin olive oil, balsamic vinegar, Dijon mustard, sea salt, and black pepper. Whisk vigorously or shake until fully emulsified and smooth.
04 - Pour the balsamic vinaigrette over the pasta mixture. Use a large spoon or salad tongs to toss gently, ensuring all ingredients are lightly coated with dressing.
05 - Taste and adjust seasoning with additional salt or pepper if needed. Garnish with extra fresh basil leaves and cracked black pepper. Serve chilled or at room temperature.