Preheat your oven to 400 degrees Fahrenheit. Lightly grease a baking dish or a rimmed baking sheet with a small amount of oil or cooking spray to prevent the turkey from sticking. Pat the turkey tenderloins dry with paper towels, as this helps the oil and spices adhere better and ensures a nice sear in the oven.
In a small bowl, whisk together the olive oil, garlic powder, onion powder, dried thyme, dried rosemary, smoked paprika, salt, and black pepper. Brush the herb mixture evenly over all sides of the turkey tenderloins until they are thoroughly coated. This spice rub will create a flavorful crust while locking in the natural juices of the meat.
Place the seasoned tenderloins in the prepared baking dish. Roast in the center of the oven for 25 to 30 minutes. The exact timing may vary depending on the thickness of the meat, so it is helpful to check for an internal temperature of 165 degrees Fahrenheit using a meat thermometer to ensure they are fully cooked but still tender.
Once the turkey reaches the correct temperature, remove the dish from the oven. Transfer the tenderloins to a cutting board and tent them loosely with foil. Allow the meat to rest for at least 5 to 10 minutes before slicing. This resting period is crucial because it allows the juices to redistribute, resulting in a much more succulent bite.
