I have the most success using this simple treatment. Two things signal roasted veggie perfection: charred spots and wrinkles.

It can slice fruits and vegetables into thick planks, almost ½-inch wide, but it can also shave the same ingredients into paper-thin slices that you can practically see through. On top of that ...

Adult’s job: Preheat the oven to 200C/400F/Gas 6. Kid’s job: Chop or slice all of the vegetables into roughly equally sized pieces and set aside. Kid’s job: For the crumble, put the flour ...