A spoonful of paprika gives this oven-cooked cauliflower a golden brown glow and slightly spicy taste; high-heat roasting creates a nutty sweetness.
Preheat oven to 450 degrees. Line a rimmed baking sheet with aluminum foil. Spread cauliflower on foil. Sprinkle with oil and paprika; toss to coat. Season with salt and pepper. Roast until tender and lightly browned, 20 to 25 minutes, tossing once.