1 Cake Mix
1 Diet Can of Soda
Mix together and bake as directed on the Cake Mix box.
That is it, don’t add anything else. I would pick a soda that matches the color of the cake if you are not telling people how you are making the cake. For example: White Cake /Diet Sprite or Chocolate Cake/ Diet Root Beer etc. You will be surprised at how many people have no idea that you did anything different and you just saved hundreds of calories.
Betty Crocker Cake Mix: $0.69
Walmart Price: $1.34