Substituting diet soda for eggs and oil saves calories but lets the sweet flavor and tender texture shine right through. Add a splash of lemon juice to some sugar-free whipped topping to frost your fully cooled cake.

1. Preheat oven to 350°F. Grease and flour cake pan. Set aside.

2. Combine cake and soft drink to create a smooth batter.

3. Turn batter into the cake pan. Bake according to cake mix instructions.