Instructions

  1. Preheat the oven to 425°F Toss cauliflower and 2 T olive oil in a large bowl. Heat a heavy large skillet over medium-high heat. Add cauliflower and sauté until beginning to brown, about 5 minutes. Transfer cauliflower to rimmed baking sheet.
  2. Add 2 T oil to the same skillet. Add onion wedges and cook until browned on 1 side, about 3 minutes. Using spatula, carefully transfer onions to baking sheet with cauliflower, arranging wedges browned side up.
  3. Add last 2 T oil to same skillet. Add fennel; sauté until fennel softens slightly and starts to brown, about 5 minutes. Transfer to same baking sheet.
  4. Scatter garlic and marjoram over vegetables. Sprinkle with salt and pepper. Roast until vegetables are caramelized, about 25 minutes. Serve hot or at room temperature.