Preheat the oven to 400°F to 425°F
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 a baking sheet
Avoid overcrowding the pan
Roast for 20 to 40 minutes, depending on the vegetables
Stir or flip halfway through cooking
Roast until tender and browned
Remove from the oven and serve immediately