Mock Mille-Feuilles? For years, people have been doing odd things with Ritz Crackers. Perhaps you've come across the famed Mock Apple Pie? Mille-feuilles, in French, means one thousand sheets, or layers. The steps required to make this luscious version of the classic pastry can be counted on one hand. 24 hours chill time is recommended. It will keep for three days - refrigerated.