14BAKING(continued)PreheatingPreheat the oven if the recipe calls for it. Preheatmeans bringing the oven up to the specifiedtemperature before putting the food in the oven.To preheat, set the oven at the correct temperature—selecting a higher temperature does not shortenpreheat time.Preheating is necessary for good results when bakingcakes, cookies, pastry and breads. For most casserolesand roasts, preheating is not necessary. For ovenswithout a preheat indicator light or tone, preheat10 minutes. After the oven is preheated, place thefood in the oven as quickly as possible to preventheat from escaping.Pan PlacementFor even cooking and proper browning, there must beenough room for air circulation in the oven. Bakingresults will be better if baking pans are centered asmuch as possible rather than being placed to the frontor to the back of the oven.Pans should not touch each other or the walls of theoven. Allow 1– to 1 1⁄2–inch space between pans aswell as from the back of the oven, the door and thesides. If you need to use two shelves, stagger the pansso one is not directly above the other.Cookies Aluminum FoilWhen bakingcookies, flat cookiesheets (without sides)produce better-lookingcookies. Cookiesbaked in a jelly rollpan (short sides allaround) may havedarker edges and paleor light browningmay occur.Cookies can be baked on several shelves at thesame time but browning may be uneven becauseof reduced air circulation.Do not use a cookie sheet so large that ittouches the walls or the door of the oven.Never entirelycover a shelf withaluminum foil. Thiswill disturb the heatcirculation and resultin poor baking.A smaller sheet offoil may be used tocatch a spillover byplacing it on a lowershelf several inchesbelow the food.Do not put aluminum foil on the oven bottom.Baking GuidesWhen using prepared baking mixes, follow packagerecipe or instructions for best baking results.