Although the first day of fall isn’t until Sept. 22, most folks consider the upcoming Labor Day holiday as the unofficial end of summer. Before you say so long, farewell, auf Wiedersehen, goodbye to summer, why not end things on a sweet note? Cookbook author and former Food Network host Sara Moulton has come up with a guilt-free way to enjoy the last of summer’s berries with her Crisp Blueberry Shortcakes.