To season baking stone, you need to use stoneware. Begin by washing the stoneware with hot water and a scrub brush. Never use soap or the dishwasher. After you have washed the stoneware and dried it, brush a light coat of vegetable oil and place the food in it to cook. Get tips from http://www.ehow.com/how_4881784_season-pampered-chef-stoneware.html.