How Many Cake Mixes Do I Need For A Sheet Cake?
The number of cake mixes required to make a sheet cake depends on the size of the sheet pan. For a standard 9×13 inch pan, one cake mix is enough. For larger sizes such as 11×15 inches or 12×18 inches, two cake mixes may be needed. It is always better to read the instructions on the cake mix box for more information.