Preheat oven to 200C.
Cut your peppers in half and place them cut side down on an olive oiled roasting tray. Roast for 20 minutes. Then skin. When cool, dice.
Cut a cross in the top of your tomatoes and drop them briefly into boiling water. The skins will easily pull off the tomatoes now. Cut in half and remove the seeds. Dice the tomatoes, keeping the juice.
In the meantime, put olive oil into your saucepan/frying pan and sweat the onions.
Add the garlic, the salt, the saffron, the herbs and the verjuice.
Add the diced tomato with juices.
Prep the aubergine and courgette by slicing both thinly, say 5mm thick slices. Obviously don’t use the stems!
Put your nicely softened pepper, onion, saffron, herby mix (but remove the Thyme sprig stems if they are woody, leaves are fine) onto an olive oiled roasting tray. Yeah use the same one as before, who needs to wash up more?
Arrange the slices of aubergine and courgette in overlapping slices onto spread out mixture.
Cover with foil and roast for 45 to 55 minutes in your 200C oven. The vegetable should be soft but not watery.
Remove from oven, remove the foil and roast, uncovered for another ten minutes.
Top with yoghurt with sumac stirred in, and more herbs.
Eat with crusty bread or couscous.