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