Napoleon's Rectangular Baking Stone is perfect for the barbecue grill and baking in the oven too. The porous stone pulls moisture away from your pizza crust, pastries, and breads, yielding crispy and light results. The stone is a natural heat conductor and distributes heat evenly. You can use a Baking Stone to ensure that your barbecue or oven are heating evenly, increasing efficiency when baking. The natural surface doesn't retain odors and flavors; so last week's garlic pizza won't flavor this week's homestyle honey biscuits. Like your favorite cast iron frying pan, this stone will season over time, creating a non-stick surface and making it more effective. It is recommended that you hand wash your Rectangular Baking Stone by hand, with warm water, once completely cooled. Avoid soapy water and scrubbing.