Treacle tart is a British classic, and Mary Berry shows you how to make it to perfection. This version has a fancy lattice woven top to show off to all your guests. But Mary makes it very easy.

This classic tart has a lattice top, which looks impressive, but is easy once you get the hang of it. For this recipe you will need a 23–25cm/9–10in tart tin. For the pastry, put the flour ...