Put the dressing ingredients in a small food-processor or mortar and process/grind until you get a coarse sauce.
Cut the vegetables into bite-sized pieces/wedges and scatter them into a baking tin.
Pour over the dressing, and coat the vegetables evenly either using your hands or a silicon brush.
Put the tin in a medium-hot oven and roast until the vegetables are golden and soft. This should take about 25 minutes, depending on the oven temperature.
Serve warm with chopped parsley scattered all over or let it cool and refrigerate.