How do you roast a whole cauliflower?

A whole roast cauliflower arrives at the table looking like an event. It is golden, crackly at the edges, and it makes everyone at the table lean in. It's also one of the easiest showpieces in vegetable cooking: very little work, mostly oven time.

Choosing and preparing the cauliflower

Pick a firm, heavy head with tight, creamy-white florets and fresh green leaves. Avoid any with brown or soft spots.

• Trim the base so it sits flat on the tray.
• Leaves: remove the large outer leaves, but keep the small, tender inner ones. They roast into crisp, nutty little chips that are a treat in themselves.
• Core: cut a cross into the base of the stem, or carve a shallow cone out of it. This helps heat get into the thickest part, which is the last to cook.

To pre-cook or not

Two good approaches. Both work; choose by the texture you want and the time you have.

Parboiling or steaming first

Lower the whole head into a large pot of salted boiling water, or steam it, until the outside is just tender but the centre is still firm when checked with a knife. Drain it upside down and let it steam dry completely before seasoning; a wet surface won't brown. This gives a softer, more evenly cooked centre and shortens the time in the oven. What blanching does explains the idea.

Roasting from raw

Season the raw head and put it straight in the oven. It takes longer and the core stays firmer, but the flavour is more concentrated and the outside gets deeply caramelised. Some cooks cover it with foil for the first part of roasting to let it steam through, then uncover to brown.

Seasoning

Be generous; a cauliflower has a lot of surface and a mild flavour.

• Fat: olive oil, butter, or both, rubbed all over and into the gaps between florets.
• Salt: plenty, all over.
• Spices: whatever direction you choose. Smoked paprika, cumin, chilli flakes, crushed fennel seeds, a little turmeric, garlic powder.
• A paste: mixing oil with garlic, lemon zest, spices and a spoon of tomato paste or harissa gives a coating that clings and colours well.
• A yogurt coating: thick yogurt mixed with spices forms a crust as it roasts.

Oven cues

Use a hot oven, fully preheated, and place the cauliflower on a tray or in an ovenproof pan with a little space around it.

It's done when:

• The outside is deep golden brown with darker, crisp edges on the florets.
• A knife or skewer slides into the thickest part of the core with little resistance.
• The leaves are crisp and browned.

If the outside is browning too much before the core is tender, cover it loosely with foil and keep going. Baste it with the pan juices or a little more oil once or twice.

Serving it as a centrepiece

Bring it to the table whole, on a board or platter, and cut it into wedges in front of everyone. Then give it company:

• A green sauce: an Italian salsa verde of herbs, capers and lemon cuts through the richness.
• Something crunchy: toasted nuts, or pangrattato, garlicky fried breadcrumbs.
• Something creamy: yogurt with lemon and garlic, tahini sauce, whipped ricotta or feta.
• Something fresh: herbs, pomegranate seeds, lemon wedges.

Alongside, add grains, lentils or beans, a sharp salad and bread, and it becomes a full meal. Our page on making a vegetarian dinner feel like a meal has the structure.