Use these ceramic pie weights when your recipe calls for pre-baking a pie crust. The weight keeps the crust from shrinking or bubbling up while baking. If you place a piece of parchment paper on the crust before filling with the pie weights, it's easy to remove them after baking and they won't need cleaning. One box of pie weights cover the bottom of one 9" pie crust completely. Mrs. Anderson's pie weights come in a handy box for storage.