TopicSheet cake servings chart.
PostedThu, Sep 05th 2019 01:07 AM
In general, the 13-by-9-inch cake will take about 5 to 10 minutes less than the 9-inch layers. To be safe, start checking about 15 minutes before the time in the original recipe. Cupcakes usually take about half as long as a 9-inch round cake. If the cake called for 30 to 35 minutes of baking time, start checking the cupcakes after 15 minutes.
During baking, check the cake at least a couple of times to determine if it is finished, taking into account a shorter baking time than a standard recipe. For easier handling when making layer cakes, place your baked sheet cake in the freezer or at least the fridge wrapped in plastic.