A dough moulder for producing moulded dough products of a desired size and/or shape. The moulder includes guide plate (155, 156) which are selectively insertable through respective pairs of slots (151, 152, 153) formed in a pressure rolling board (150). The guide plates (155, 156) extend through the pressure rolling board (150) to define a channel of selectable width depending on which pair of slots (151, 152, 153) is selected. The variable width channel enables dough products of a desired size and/or shape to be rolled.