Combine all of the ingredients (including the broccolini) in a ziplock bag. Securely close the bag and gently massage the ingredients until all of the broccolini pieces are fully coated. Set the bag in the fridge to marinate for 20-40 minutes.

Place a wire oven-safe cooling rack inside a large rimmed baking sheet so that the rack is slightly elevated above the bottom of the pan. For easy clean-up you can line the bottom baking sheet with aluminum foil. Then, transfer the broccolini stems from the marinade to the top of the wire rack in a single layer. Discard the remaining marinade. Roast the broccolini in a pre-heated 450° oven (top rack) for 10-15 minutes or until the florets appear slightly charred and the stems are fork-tender. Serve hot.