Mix all the topping ingredients together and put to one side
Saute all the root vegetable in a little oil until soft. You really need to do this, once you add the tomatoes, the potato and carrot don’t seem to soften any more, and boiled onion is not the flavour we are after here.
Put the base in an oven proof dish and pile the topping over it
Bake at 190° for about half an hour click here to start a 30 minute timer
If you have any available, a crisp green vegetable goes well
Any root vegetable you have will work well here. If you have seeds of any description, a spoon or two in the topping is delicious, I like sesame and sunflowerIf you don’t have any cheese, leave it out, the crumble will still taste lovely