2 cups finely ground graham cracker crumbs (about 24 graham squares)
1/3 cup white sugar
1/2 cup butter, melted
1/2 teaspoon ground cinnamon (optional)
Mix graham cracker crumbs, sugar, melted butter or margarine, and cinnamon until well blended . Press mixture into an 8 or 9 inch pie plate.
Bake at 375 degrees F (190 degrees C) for 7 minutes. Cool. If recipe calls for unbaked pie shell, just chill for about 1 hour.