Clean, wash and cut the peppers and courgettes into pieces. Quarter the pumpkin and remove the seeds with a tablespoon. Peel the pumpkin and cut the flesh into slices. Peel onions and cut them into slices.
Peel, wash and slice the parsnips. Wash the rosemary, dab dry. Put 1 sprig aside for garnishing. Remove the needles from the remaining twigs.
Heat 9 tablespoons of oil in portions in a large frying pan. Sauté the vegetables, onions and rosemary needles in several portions over high heat, season each portion with salt and pepper. Remove from the pan and place on a fat pan.
Dissolve the stock in 1⁄4 l of hot water, pour onto the vegetables. Braise in the preheated oven (electric cooker: 200°C/circulating air: 175°C/gas: level 3) for approx. 25 minutes.
Meanwhile peel and roughly chop the garlic. Crumble the feta roughly. Finely mash both together. Stir in yoghurt and season the dip with pepper and a little salt.
Remove the vegetables and arrange them on a plate. Garnish with the remaining rosemary. Sprinkle 1 tablespoon of oil over the dip and eat with it. Flatbread tastes good with it.