JBK Terra Cotta 5 x 3 inch bread warmer tile. For best results, simply heat the ceramic tile in your oven, toaster, or barbecue. Set the heated tile in a cloth-lined basket or dish, placing your warmed bread or buns on top, and cover with cloth. Oven: Bread Warmer may be placed in a heated oven at 250-350 degrees for about 10 minutes. Toaster: Your Bread Warmer may be heated in a normal toaster. Barbecue: You can place the Bread Warmer tile on the grill in your barbecue and heat for about 10 minutes. Warning: To be safe, always handle the heated Bread Warmer carefully with tongs, pot holder, or oven mitt's. It is not advisable to heat the JBK Bread Warmer in the microwave. Care: If your Bread Warmer becomes soiled, it can be washed by hand, or run through a high temperature cleaning cycle in your oven. Hint: More than one Bread Warmer can be used for larger dishes or baskets of baking.