This lemon turkey tenderloin with Dijon mustard is a flavorful and juicy dish that is perfect for a special occasion or a weeknight dinner. The tender turkey is marinated in a tangy mixture of lemon juice, Dijon mustard, garlic, and herbs, which infuses it with a bright and zesty flavor. It is then roasted to perfection, resulting in a tender and succulent turkey tenderloin that is bursting with flavor. Serve it with roasted vegetables and a side of mashed potatoes for a complete and satisfying meal.