Go Back
Sliced three-layer chocolate cake on a white stand featuring rich frosting and a rim of rainbow sprinkles.

Decadent Sugar-Free Chocolate Birthday Cake

Celebrate any occasion with this rich, moist, and utterly delicious sugar-free chocolate birthday cake, topped with a luscious sugar-free chocolate cream cheese frosting. It's a guilt-free indulgence that everyone will love!
Print Recipe Pin Recipe
Prep Time 40 minutes
Cook Time 35 minutes
Total Time 1 hour 15 minutes
Servings: 12 slices
Course: Dessert
Cuisine: American
Calories: 310
Ingredients Equipment Method Notes

Ingredients
  

For the Sugar-Free Chocolate Cake
  • 2 cups all-purpose flour sifted
  • 1 cup unsweetened cocoa powder Dutch-processed recommended
  • 2 tsp baking soda
  • 1 tsp baking powder
  • 1/2 tsp salt
  • 1 3/4 cups granular sugar substitute such as Erythritol blend or Swerve
  • 2 large eggs room temperature
  • 1 cup unsweetened almond milk or whole milk, room temperature
  • 1/2 cup vegetable oil or other neutral oil
  • 2 tsp vanilla extract
  • 1 cup hot strong brewed coffee or hot water
For the Sugar-Free Chocolate Cream Cheese Frosting
  • 8 oz cream cheese full-fat, softened
  • 1/2 cup unsalted butter softened (1 stick)
  • 1/2 cup unsweetened cocoa powder Dutch-processed recommended
  • 2 1/2 cups powdered sugar substitute such as Confectioners Swerve or Erythritol blend
  • 1/4 cup heavy cream or unsweetened almond milk
  • 1 tsp vanilla extract
  • Pinch salt

Equipment

  • Two 8-inch round cake pans
  • Large Mixing Bowl
  • Medium Mixing Bowl
  • Whisk
  • Electric mixer (stand or hand-held)
  • Spatula
  • Measuring cups and spoons
  • Fine-Mesh Sieve
  • Oven

Method
 

Prepare the Cake
  1. Preheat your oven to 350°F (175°C). Grease and flour two 8-inch round cake pans, or line with parchment paper circles.
  2. In a large mixing bowl, whisk together the sifted flour, cocoa powder, baking soda, baking powder, salt, and granular sugar substitute. Ensure all dry ingredients are well combined.
  3. In a separate medium bowl, whisk together the eggs, almond milk, vegetable oil, and vanilla extract until well combined.
  4. Pour the wet ingredients into the dry ingredients. Mix on low speed with an electric mixer (or by hand with a whisk) until just combined. Do not overmix.
  5. Carefully and slowly pour the hot coffee (or hot water) into the batter, mixing on low speed until the batter is smooth and no lumps remain. The batter will be thin.
  6. Divide the batter evenly between the prepared cake pans. Bake for 30-35 minutes, or until a wooden skewer inserted into the center comes out clean. Be careful not to overbake.
  7. Remove the cakes from the oven and let them cool in the pans for 10-15 minutes before inverting them onto a wire rack to cool completely. This is crucial before frosting.
Prepare the Sugar-Free Chocolate Cream Cheese Frosting
  1. In a large mixing bowl with an electric mixer, beat the softened cream cheese and unsalted butter together on medium speed until light, fluffy, and smooth (about 2-3 minutes). Scrape down the sides of the bowl as needed.
  2. Add the unsweetened cocoa powder, powdered sugar substitute, heavy cream, vanilla extract, and a pinch of salt. Start mixing on low speed until the powdered sugar substitute is incorporated, then increase to medium-high speed and beat until the frosting is light, fluffy, and well combined (another 2-3 minutes). If the frosting is too thick, add a tiny bit more heavy cream; if too thin, add a bit more powdered sugar substitute.
Assemble the Cake
  1. Once the cake layers are completely cooled, place one layer on your serving plate or cake stand. Spread about 1 to 1.5 cups of frosting evenly over the top.
  2. Carefully place the second cake layer on top. Use the remaining frosting to cover the top and sides of the cake, smoothing it with an offset spatula or knife. You can decorate with sugar-free chocolate shavings or berries if desired.
  3. Chill the cake in the refrigerator for at least 30 minutes before slicing to allow the frosting to set. Serve at room temperature for best flavor and texture.

Notes

For the best flavor and moistness, use Dutch-processed cocoa powder. Ensure all cold ingredients (eggs, milk, cream cheese, butter) are at room temperature for a smooth, lump-free batter and frosting. Store leftover cake in an airtight container in the refrigerator for up to 5 days.