A cookie crumb pie crust is an easy alternative to a traditional pie crust. A simple concoction made using finely crushed cookies, which add a pleasing texture -- not to mention a delicious taste -- to all sorts of pies. They are particularly popular when paired with cream or custard fillings.
What is a cookie crust? It's a simple pie or pastry crust made with finely crushed cookies. Sometimes they include sugar for added sweetness, or melted butter, which acts as a binder to hold the crumbs together.
Why make a cookie crust? There are a few good reasons to use a cookie crust. One is flavor: the cookies will impart a pleasing flavor that will complement many pie fillings. Another is texture. Some smooth and creamy fillings will benefit from the light crunch of cookie crumbs, which will add a pleasant contrast. The texture isn't only pleasant in terms of taste, though. It is also good for the keeping quality of certain pies. Certain pie fillings (especially cream or curd based ones) can make a typical butter crust soggy rather rapidly, even if it is prebaked. The cookie crust will retain a crunch much longer.