Heat the oil in a large frying pan over a medium heat, add the onions and cook until turning golden. Add the garlic, cumin, cinnamon and ginger, and continue to cook for 2 mins. Add the vegetables and cook, stirring, until they begin to soften.
Add the remainder of the ingredients, bring to the boil and simmer over a gentle heat for 15-20 mins until vegetables are tender. Remove the lemon strip and cinnamon stick, and serve with couscous, plant-based yoghurt and flatbreads.
Recipe by appetite magazine at https://www.appetitemag.co.uk/vegetable-tagine-2/