- 1 head cauliflower, cut into florets
- 2 carrots, cut diagonally into 1-inch chunks
- 1 onion, cut into thin wedges
- 3 tablespoons vegetable oil
- salt and ground black pepper to taste
- Preheat an oven to 450 degrees F (230 degrees C). Position oven rack in the center of the oven.
- Combine cauliflower, carrots, onion, and oil in bowl and toss until the vegetables are well coated. Season with salt and pepper. Transfer to a baking sheet and spread into a single layer.
- Bake in the preheated oven until golden brown and tender, 30 to 40 minutes.