Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Peel the sweet potato and cut it into 1/2-inch cubes, then trim the ends off the fresh green beans.
In a small bowl, whisk together the maple syrup, apple cider vinegar, and smoked paprika to create the glaze.
Place the turkey breast, diced sweet potatoes, and green beans on the prepared baking sheet.
Drizzle the olive oil over the turkey and vegetables, then season everything evenly with garlic powder, sea salt, and black pepper.
Brush half of the maple glaze mixture onto the top and sides of the turkey breast.
Roast in the oven for 20 to 25 minutes, or until the turkey reaches an internal temperature of 165°F and the potatoes are fork-tender.
Brush the remaining maple glaze onto the turkey during the last 5 minutes of cooking to create a glossy, flavorful finish.