01 -
Preheat oven to 350 degrees Fahrenheit.
02 -
Grease a 13 x 9-inch baking pan with cooking spray.
03 -
In a large mixing bowl, mix the cake mix with the can of orange soda pop until the batter is smooth and well combined.
04 -
Pour the batter into the prepared baking dish and bake for 30 minutes or until a toothpick inserted into the center comes out clean.
05 -
Remove from oven and let cool completely. Frost with the whipped topping.
06 -
Add orange zest and mandarin orange slices for garnish, if desired.