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Low Carb Diet Coke Cake

This diet coke cake has a wonderful chocolate fudge taste, and is low carb, gluten free, and sugar free!
Course Dessert
Cuisine American
Prep Time 20 minutes
Cook Time 20 minutes
Total Time 40 minutes
Servings 8
Calories 301kcal
Author Georgina from


To make the cake:

  • cups almond flour
  • 3 tbs unsweetened cocoa powder
  • 2 tbs low carb sweetener eg xylitol
  • 1 tsp baking powder
  • ¼ tsp salt
  • 7.5 oz Diet Coke
  • 2 egg whites

To make the ganache frosting:

  • 1 oz unsweetened chocolate
  • ¼ cup heavy cream
  • ¼ cup unsalted butter softened
  • 2 tbs low carb sweetener eg xylitol


  • Preheat the oven to 375F (190C).
  • To make the cake, stir together the almond flour, cocoa powder, sweetener, baking powder and salt.
  • Stir in the Diet Coke. It will froth up but will soon calm down after you have combined it.
  • In a separate bowl, whisk two egg whites together until soft peaks form. Gently fold them into the rest of the mixture.
  • Spoon the cake batter into a 9" springform cake tin. Bake in the oven for 20 minutes or until the center of the cake is cooked. Leave to cool for 5 minutes then transfer to a wire cooling rack.
  • To make the ganache frosting, melt the unsweetened chocolate in the microwave.
  • Leave to cool for 5 minutes, then whisk in the heavy cream, softened unsalted butter, and low carb sweetener. Keep whisking until the mixture is smooth and fluffy.
  • Spoon the frosting onto the cooled cake.


6g net carbs per slice (incl frosting).
Does not include sugar alcohols from the sweetener.


Calories: 301kcal | Carbohydrates: 10g | Protein: 9g | Fat: 27g | Saturated Fat: 7g | Cholesterol: 25mg | Sodium: 91mg | Potassium: 141mg | Fiber: 4g | Sugar: 1g | Vitamin A: 285IU | Calcium: 113mg | Iron: 2.3mg