Preheat the oven to 200C / 180C fan / Gas 6 / roasting AGA
Place the seeds in a pestle and mortar and crush lightly. Add the salt and sumac, stir to combine.
To prepare the carrots, rinse, don't peel them and pat dry. Cut any large ones lengthways down the middle. Place on a roasting tray and toss with some olive oil. Scatter the seed mix on top and toss to combine. Put in the preheated oven and roast for 30-35 minutes until just staring to caramelise and the seeds are toasted.
Put the yoghurt in a small bowl, add the extra virgin olive oil and a good pinch of salt and grind of pepper. Mix to combine.
Spoon the yoghurt onto a serving plate, and spread evenly. Top with the carrots and crispy seeds. Sprinkle over the feta and parsley, drizzle with good extra virgin olive oil and balsamic vinegar. Serve immediately.