Step 1

Preheat oven to 230°C/210°C fan-forced. Line a baking tray with baking paper. Place potato on tray, drizzle with oil and season. Bake for 12 minutes.

Step 2

Meanwhile, combine miso, mirin, soy, ginger and sugar in a bowl. Reserve half the mixture and set aside. Add salmon to remaining mixture, turning to coat.

Step 3

Move potato to one side of tray and top with broccolini. Add salmon to other half of tray and bake for a further 12 minutes, spooning reserved miso mixture over salmon in last 5 minutes of cooking or until potato and broccolini are tender. Move vegetables back over entire tray, then arrange salmon on top. Serve scattered with sesame seeds, chilli and onion.