Bake this irresistible Blueberry Diet Soda Cake at home. Made with blueberries, butter and walnuts. Easy step-by-step instructions included.
This Blueberry Diet Soda Cake relies on simple, everyday ingredients such as butter recipe cake mix, diet 7-up (wild berry plus) and walnuts, chopped (optional). It comes together quickly and makes 4 servings, at about 1075 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Blueberry Diet Soda Cake delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.
Updated Jun 30, 2026