Always be sure to account for differences in pan sizes when considering cooking time. For example, if a recipe calls for using an 8–inch round cake pan and baking for 25 minutes, and you substitute a 9–inch pan, the cake may bake in only 20 minutes, since the batter forms a thinner layer in the larger pan. (Use a toothpick inserted into the center of the cake to test for doneness.)
Always be sure to account for differences in pan sizes when considering cooking time. For example, if a recipe calls for using an 8–inch round cake pan and baking for 25 minutes, and you substitute a 9–inch pan, the cake may bake in only 20 minutes, since the batter forms a thinner layer in the larger pan. (Use a toothpick inserted into the center of the cake to test for doneness.)