How many boxes of cake mix are needed for a Wilton cake pan?
Wilton provides a detailed list of how many cups of cake batter are needed for each different pan size and shape on their website. For most pans, fill them one-half to two-thirds full of cake batter. If using a shaped pan, it is important to put as many cups of cake batter as the instructions for the pan say to use. Source: bakingbites.com