Toast all your slices of gluten-free bread so that they’re completely golden and crisp. Lightly toasted bread won’t work half as well so make sure they’re as golden brown as possible... without burning them, obviously!

Once cooled, grab a large mixing bowl. Either crumble the bread by hand or you can use a food processor to whizz them into nice and even, fine crumbs.

If the breadcrumbs still feel a little soft and bread-like at this point, you can always spread them on a baking tray and briefly bake them in the oven for 5 minutes until they brown a little more.