Preheat the oven to 180°C.
Wash the rhubarb and cut into 3cm long pieces. Put in an ovenproof dish.
Halve the vanilla pod, scrape out the pulp and mix with the maple syrup. Place the halved pods as well to the rhubarb pieces and pour the vanilla maple syrup over everything.
Put in the oven for 20 minutes. Ready. Buon appetito!