It’s unclear whether this reaction will have any impact on the future shape of Doritos, as the launch of square crisps hasn’t yet been confirmed by either PepsiCo or Walkers (who own the brand).

Line an 8in square baking tin with parchment paper. In a pot gently heat the crunchy peanut butter, honey and coconut oil until they form runny syrup. Do not boil or the mixture will burn.

2. Unfold 1 pastry sheet on a lightly floured surface. Roll the pastry sheet into a 12x12-inch square. Cut into 36 (2-inch) squares. Prick the pastry squares with a fork. Repeat with the remaining ...