Cooking large cakes is different than cooking smaller cakes. Each tier on a large cake is typically made from two, 2-inch thick layers of cake. The cooking time for a large cake varies with the size of pan used. You can cook up to 16-inch cake pans in most ovens. If your oven is small, check the size of the pan ahead of time to make sure the door can close with the pan inside the oven. If this is your first time to make a large cake, plan to make a trial cake ahead of time to prevent a last-minute disaster.
Place a sheet of parchment paper in the bottom of each cake pan. Spray the top of the paper and the sides of the pan with cooking spray to prepare the pans for baking. Heat the oven to 325 degrees Fahrenheit for best results. Higher temperatures will cook less evenly and make the cake too rounded.
Use 9 cups of batter for a 12-inch round cake, 12 cups for a 14-inch cake and 16 cups for a 16-inch cake. For large sheet cakes, use 9 cups of batter for a 16-inch by 11-inch cake and 14 cups for an 18-inch by 12-inch cake.
Fill the cake pans with the correct amount of batter and tap them gently on the counter to remove air bubbles and even the level of the batter.
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Bake the cakes one at a time in the oven, placed on the center rack. Air circulation is important to help the cakes bake evenly.
Cook the cakes based on the size and amount of batter. Cook 12-inch round cakes for 50 minutes, 14-inch cakes for 55 minutes and 16-inch cakes for 60 minutes. Cook sheet cakes based on size as well. Cook 16-inch by 11-inch cakes for 30 minutes and 18-inch by 12-inch cakes for 40 minutes. The cakes may need more time. Remove the cakes from the oven when they are spongy in the middle and start to come away from the sides.
Cool the cakes for 15 minutes on wire cooling racks before moving to the freezer to prepare for icing.
Brenda Priddy has more than 10 years of crafting and design experience, as well as more than six years of professional writing experience. Her work appears in online publications such as Donna Rae at Home, Five Minutes for Going Green and Daily Mayo. Priddy also writes for Archstone Business Solutions and holds an Associate of Arts in English from McLennan Community College.