Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Chop the carrots and parsnips into 1-inch chunks and halve the Brussels sprouts.
In a large mixing bowl, combine the turkey breast, chopped carrots, parsnips, and Brussels sprouts.
Drizzle the olive oil over the mixture and add the dried rosemary, dried thyme, sea salt, black pepper, and minced garlic.
Toss everything thoroughly until the turkey and vegetables are evenly coated in the oil and seasonings.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the turkey is not covered by the vegetables.
Roast for 25 to 30 minutes, or until the turkey reaches an internal temperature of 165°F and the vegetables are tender and golden-brown.
Remove from the oven and let the turkey rest for 5 minutes before slicing to ensure the meat stays juicy.