First, preheat your oven to 400º Fahrenheit.
Trim the bottom of the cauliflower and remove all the leaves and the hard stem – but without breaking apart the cauliflower. Go ahead and give it a quick rinse, patting it to dry.
Generously drizzle your oil on top. It’s the key to a perfectly roasted cauliflower head.
Then add salt (and pepper if you wish). Using your hands spread the oil and salt all around the cauliflower.
Put it in a oven safe pan and cover it with foil, without leaving any gaps.
Cook in the oven for 40 – 50 minutes, depending on the size of your cauliflower.
Check with a knife, if it slides in easily, then it’s cooked.
Remove foil and allow it to roast for an extra 5 to 10 minutes so it turns golden brown. Keep an eye on it, so it doesn’t burn.
Mix in the parsley to 3 Tbsp of olive oil or avocado oil, then drizzle or brush it on the cauliflower while it’s still hot.
Once it’s sliced, it may need extra salt.