Black Forest ... the trifle, use around one-third of the blondies, cut into 2-3cm/¾-1¼in cubes, to line the base of a large trifle bowl (you won’t need the remaining blondies for this recipe).

This pretty desserts riffs on the classic Black Forest cake, but makes more elegant ... then layered with cream and blackberries. For this recipe you will need a 25x35cm/10x14in baking tray ...