Adjust rack to lowest position and heat oven to 475 deg.
2. Trim outer leaves of cauliflower and cut stem flush with bottom. Cut head into 8 equal wedges so core and florets remain intact.
Place wedges on on foil lined baking sheet. Drizzle with 2 Tbsp olive oil and sprinkle with salt and pepper. Gently rub to distribute oil and seasoning. Gently flip over and drizzle other side with remaining 2 Tbsp olive oil.
Cover baking sheet tightly with aluminum foil and cook for 10 min. Remove foil and roast for 8-12 min until bottom is golden. Carefully flip pieces with spatula and cook 8-12 min longer until bottom is golden.
Drizzle with olive oil or sauce and serve immediately.