I remember years ago, my sons' Tica grandmother used to make a pie crust with Galletas Maria. The Galleta Maria is a very popular sweet vanilla cookie with the crispness of a cracker. You can find it everywhere in Costa Rica, and this is my substitute for the original Rev. Sylvester Graham's cracker.
Preheat oven to 300° F.
Crush about 25-30 Galletas Maria until you have about 1½ cups of fine crumbs.
Mix this with ¼ cup of sugar, ¼ teaspoon of cinnamon and ¾ of a stick of butter, melted.
Firmly press the crumb mixture into a pie pan making sure to evenly cover the bottom and side.
Bake for 15 minutes and allow it to cool to room temperature before you add your pie filling.