Step 1

Preheat the oven to 400°F (200°C).

Step 2

In a large bowl, toss the root vegetables together with the olive oil and thyme. Season with salt and pepper.

Step 3

Arrange the root vegetables in a single layer on a rimmed baking sheet and dot with butter.

Step 4

Roast for 30 minutes, stir, and continue roasting for another 25 to 30 minutes, or until the vegetables are tender and golden.

Step 5

Serve immediately.