01 -
Preheat the oven to 400°F (200°C). Line a rimmed baking sheet or shallow baking dish with parchment paper.
02 -
Trim the rhubarb and cut it into 2-inch pieces. Keep the pieces similar in size so they roast evenly.
03 -
In a mixing bowl, gently toss the rhubarb with vanilla sugar, orange juice, orange zest, and sea salt until the pieces are evenly coated.
04 -
Spread the rhubarb on the prepared pan in a single layer. Leave a little room between pieces so they roast instead of steaming.
05 -
Roast for 15-18 minutes, turning the pan once, until the rhubarb is fork tender but still holding its shape.
06 -
Let the rhubarb rest on the pan for 10 minutes so the syrup thickens slightly. Serve warm or chill with the syrup for later.