You thought cauliflower was boring? Think again.
On rimmed baking sheet, toss cauliflower with 1 tbsp. oil, capers, and crushed red pepper; season. Roast at 425° until cauliflower is tender and browned in spots, about 20 minutes. In small bowl, whisk remaining 3 tbsp. oil with vinegar and garlic; season dressing. Toss cauliflower with dressing and herbs. Serve with lemon wedges.