01 - Preheat oven to 425°F (220°C).
02 - Toss carrots, parsnips, sweet potato, and red onion with olive oil, thyme, salt, and pepper on a baking sheet. Spread evenly and roast for 30–35 minutes, stirring halfway, until tender and caramelized.
03 - Combine rinsed quinoa, vegetable broth, and salt in a saucepan. Bring to a boil, reduce heat, cover, and simmer for 15 minutes, or until liquid is absorbed. Fluff with a fork.
04 - Whisk olive oil, lemon juice, Dijon mustard, honey or maple syrup, salt, and black pepper in a small bowl until emulsified.
05 - In a large bowl, mix cooked quinoa, roasted vegetables, crumbled feta (if using), pumpkin seeds, and parsley.
06 - Drizzle vinaigrette over salad and toss gently to combine. Serve warm, garnished with additional parsley or feta if desired.