Preheat grill to medium. Put four slices of bread on a baking sheet and toast until golden on both sides. Use a serrated knife to cut each slice horizontally through its centre, creating two thin sheets of toast.
Repeat toasting and slicing process with the remaining bread, then cut each sheet of toast in half diagonally.
Put the bread triangles back on the baking sheet, untoasted side up, and grill until golden – do this in batches if necessary. Leave toast to cool.
Each Serving About 301kJ, 0,5g fat (0,1g saturated), 2g carbohydrate (1g total sugars).