1: Combine cake mix and Fanta in a mixing bowl and mix until well blended.
2: Pour the mixture into a greased cake pan.
3: Bake according to package instructions or until a toothpick comes out clean.
4: In another bowl, beat together softened butter, cream cheese, vanilla extract, and salt.
5: Gradually add powdered sugar until fluffy and smooth.
6: Once the cake is cooled, frost with the prepared icing.
