1 medium-large sized fennel bulb, fronds and rough end removed
1 large red bell pepper, stem and seeds removed
3–4 sprigs fresh thyme, leaves removed and chopped
1–2 tablespoons extra-virgin olive oil
kosher salt and pepper to taste
Preheat the oven to 400°F. Cut carrots, parsnips and sweet potatoes into pieces approximately 1½ inches thick. (The shape isn’t that important—in fact, irregular shapes look nice—but to ensure uniform cooking, try to cut all the vegetables into approximately the same size.) Keep medium-large sized shallot pieces whole and cut large shallots in half. Cut the fennel bulb into medium-sized wedges and cut the bell pepper into 1-inch irregularly-shaped cubes. Sprinkle the vegetables with the thyme leaves, toss with enough oil to nicely coat, and season with salt and pepper to taste.
Spread vegetables onto a rimmed baking sheet and bake for 20 minutes. Remove from oven, stir and rearrange vegetables, and return to the oven for another 15 minutes. Remove from the oven again, test a sweet potato and a carrot to make sure each is knife-tender. If vegetables need more time, return to the oven again and test every five minutes until done. Remove from the oven, taste, adjust seasoning with more salt and pepper if necessary and serve immediately.