Set oven heat to 200c.
Wash and chop vegetables.
Place the brussel sprouts and cauliflower in a baking tray and add 2 tbsp of EVOO and mixed herbs and using hands, mix the brussel sprouts and cauliflower in the EVOO and herbs.
After 10 minutes add the broccoli and remaining EVOO (broccoli burns quite easily so don't add at the start).
Roast for a further 15 minutes and turn veg occasionally.