Since someone asked for the recipe, here it is.
Roll out a pie crust on a cookie sheet. Slather it with melted butter. Sprinkle on sugar, followed by cinnamon. Slice into strips before baking. Bake at 375 for 20 minutes.
Makes a fine thing to throw in the oven along with a pie you're making. In fact, Mom used to make crispies from the dough scraps. I usually eat the dough scraps, so I have to unroll a separate one for the crispies.