Preheat the oven to 150°C (300°F)

Use a serrated knife to cut the bread into small cubes and arrange in a single layer on one or two baking trays. NOTE: if using leftover buns or an uncut loaf, slice these into pieces that are the same thickness as sliced bread before cutting into cubes.

Place bread into the oven and bake for 20 - 30 minutes - or until the bread cubes feel dry and crumble when crushed.

Remove from the oven, leave on the trays to cool.

Place the bread onto a shallow container, working in batches, press down on the dried bread with the base of a bottle or tin, crushing the pieces using a twisting and rocking action until you have fine crumbs. Transfer the crumbs to an airtight container as each batch is completed, seal and store.