Toss the pumpkin with a little oil and season with salt and freshly ground pepper.
Spread it out on a baking tray lined with baking paper and roast in a preheated conventional oven (top and bottom heat) at 220°C for about 25 minutes.Leave it to cool slightly on the tray.
Meanwhile, cook the quinoa according to the packet instructions, then rinse it under cold water. Leave it to drain in a sieve.
Also mix together the ingredients for the vinaigrette and season to taste with salt and freshly ground pepper.
Put the kale, pumpkin, quinoa, feta and pistachios in a bowl. Pour over the vinaigrette and toss well.
Serve straight away, or keep in the fridge until ready to serve.