Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper for easy cleanup.
Gather your chopped root vegetables and halved Brussels sprouts, then place them in a large mixing bowl.
Drizzle the vegetables with olive oil, then sprinkle the cinnamon, turmeric, smoked paprika, salt, and pepper over the top.
Toss everything together thoroughly, ensuring all pieces are evenly coated with oil and spices.
Spread the seasoned vegetables in a single layer on the prepared baking sheet, making space between pieces for even roasting.
Bake in the preheated oven for about 35-40 minutes, tossing halfway through, until the vegetables are caramelized around the edges and tender when pierced.
Remove the baking sheet from the oven and let the vegetables cool slightly; they should look deeply roasted with crispy caramelized edges and a fragrant aroma.
Serve the roasted vegetables hot as a hearty side dish, with a sprinkle of extra salt if desired, and enjoy the warm, smoky flavors with a hint of seasonal spice.