Pre-heat oven to 180ºC. (350ºF)
Add the flour spices to a large bowl and mix well, then make a well in the centre. Slowly start whisking in the water and oil until it forms a smooth silky batter.
Add all of the vegetables and stir well until they are evenly covered in batter.
Divide the mixture into 16 equal portions, I used an ice cream scoop as a measure. Use the back of a spoon to gently press down and form into circles.
Lightly drizzle over a small amount of extra rapeseed oil, then bake for 25 minutes. The onion should be soft and cooked through.
Serve with hummus and a sprinkle of freshly chopped coriander.