Kaiser Muffin Pan 12 Cup Classic Each piece of La Forme bakeware is designed with the finest materials available to guarantee perfect performance. After extensive product research, Kaiser selected steel as the base material for the entire La Forme Collection. The steel base is coated with one of two nonstick surface systems, depending on the intended use of the piece. In an oven, where the temperature can fluctuate up to 50 degrees in a normal baking cycle, the ideal baking vessel should retain heat well enough to maintain an even temperature. Yet, it should not retain heat so well that a cake, bread or cookie will burn in the time required for complete baking. Kaiser chose heavy-gauge steel as the base material for the La Forme collection, because it conducts heat gently and evenly, and produces the perfect balance necessary for a golden brown crumb or outside of the cake, and a perfectly baked, moist interior. Cakes and breads baked in La Forme cook uniformly, and cookies baked on La Forme cookie sheets brown evenly and maintain their shape. La Forme's heavy-gauge steel eliminates warping in every piece of bakeware. Select La Forme pans are manufactured with the cut- and acid-resistant Magnum coating. This allows baked goods to be cut in the pan.