Peel the parsnips and onions. Cut the parsnips and celery into 2cm cubes and the onions into wedges. Half the butternut squash, remove the seeds and cut into cubes.(No need to peel it)
Mix the cut vegetables with thyme and olive oil. Season to taste.
Place the vegetables into the basket of the airfryer. Set the timer for 20 minutes and roast the vegetables until timer rings or until vegetables are nicely brown. Stir once while roasting.
Divide the mixture into equal portions and shape into koftasize balls.
Preheat airfryer at 180 degrees for 5 minutes. Lightly brush the air fryer wire rack and the koftas with oil. Place the koftas on the rack and put it in.
Cook for 5-7 minutes at the same temperature.
Serve hot as a snack or use in gravy for chicken koftas.