01 - Preheat the oven to 425°F and line a large baking sheet with parchment paper.
02 - Combine potatoes and parsnips in a large bowl with olive oil, rosemary, thyme, garlic, salt, and pepper until evenly coated.
03 - Spread the coated vegetables in a single layer on the prepared baking sheet.
04 - Roast for 35 minutes, stirring once halfway through, until golden brown and tender.
05 - Transfer to a serving dish, garnish with extra fresh herbs if desired, and serve hot.