Preheat your oven to 400 degrees.
Spread your frozen cauliflower out on a cooking sheet, prepared with cooking spray. Note: Do not thaw. It’s not necessary!
Roast for 20 minutes. Stir and turn cauliflower and return it to the oven for an additional 20 minutes until you veggies start to caramelize to perfection.
Remove from the oven and serve.