Preheat the oven to 425°F
Line a baking sheet with parchment paper or foil
Wash and dry the vegetables
Cut vegetables into even-sized pieces
Place vegetables in a large bowl
Add oil, salt, and pepper
Toss until evenly coated
Spread vegetables in a single layer on the baking sheet
Avoid overcrowding the pan
Roast until tender and browned
Flip or stir halfway through cooking
Remove from the oven when done
Serve immediately