Spray your piece op the sides and bottom. Set aside.
Pour into a bol the cake mix, eggs, and then cut each veggie only on the #1 cone ( no other cone will work nor will cutting them with a knife) You only need about 2 cups of vegetables total. Do not add oil or water ( veggies provide the moisture ). Stir the mixture together. Then pour into your already sprayed saucepan or skillet.
Set the oven temp for Med-Low. or 225* on your electice skillet. You will not be turning the piece down. It will stay at med-low the entire time. 15-20 minutes for 1/2 box. 35-40 for whole box.
If you can smell the cake, it is done. If youcan smell the cake powerfully, the the bottom is probably burned. I have already shown you that it is not problem at you. You just cut off the burn part and the rest of the cake will not be affected.