For best results, use unsweetened applesauce since boxed cake mix already contains sugar. A common guideline is to use 1/4 cup of applesauce for every egg required by the recipe.

If you plan on adding any sort of pudding powder to your boxed cake mix, heed this expert's advice before you even open the ...

Most boxed cake mix calls for water, oil, and egg, all of which help add moisture and structure to the cake. The mix itself really has all the basic things you need: flavor, leavening, and texture.