Preheat oven to 425 degrees Fahrenheit and line a large baking sheet with parchment paper.
Peel and chop all root vegetables into roughly equal 1-inch cubes to ensure even cooking.
Place the chopped vegetables in a large mixing bowl, drizzle with olive oil, and toss until evenly coated.
Sprinkle the fresh rosemary, thyme, salt, and black pepper over the vegetables, tossing again to distribute the seasonings.
Spread the vegetables in a single layer on the prepared baking sheet, making sure not to overcrowd the pan.
Roast in the preheated oven for 35 to 40 minutes, tossing halfway through, until fork-tender and caramelized.
Remove from the oven and serve immediately as a warm, delicious side dish.