Crush the wafers using a food processor, blender or a zip-top bag and a rolling pin
Place the crumbs in a 9 inch deep dish pie plate or tin
Add the sugar and butter and mix well
Press the buttered crumbs across the bottom and up the sides of the pie dish
Press the whole wafers around the egg
Bake at 375 degrees for 10-12 minutes or until lightly browned. Let cool before using
Place in the refrigerator for an hour or until the crust is set