Butter a 9- by 5-inch (23- by 13-cm) loaf pan and line with parchment paper. Turn the dough out onto a lightly floured work surface, and roll the dough out into a 15- by 15-inch (38- by 38-cm) square.☞ TESTER TIP: If your house is warm, pop the dough in the fridge for a few minutes before rolling and shaping to firm it up, this will make it easier to cut and shape.