Chocolate Kahlúa Cake (Keto, Low-Carb & Protein-Enhanced)
This Chocolate Kahlúa Cake is rich, indulgent, and deeply chocolatey with a bold coffee-liqueur kick. It tastes like a high-end bakery dessert but fits beautifully into a keto / low-carb lifestyle. Moist almond-flour cake layers are paired with a silky mascarpone espresso frosting for a truly grown-up dessert.
Perfect for celebrations, holidays, or anytime you want a show-stopping cake that doesn’t break your goals.
Servings & Nutrition
Yield: 12 slices
Calories (per slice): ~350
Net Carbs: ~3.6 g
Protein: ~9.3 g
Fat: ~32.3 g
Ingredients
Chocolate Kahlúa Cake
- 1⅔ cups almond flour
- ½ cup cocoa powder
- ⅓ cup unflavored whey protein powder
(or egg-white protein powder) - 2 tsp baking powder
- 1 tsp espresso powder
- ¼ tsp salt
- ½ cup butter, softened
- ⅔ cup Swerve Granular
- 3 large eggs, room temperature
- 1 tsp vanilla extract
- ½ cup sugar-free coffee liqueur
(or ¼ cup strong coffee + 2 tbsp vodka + 2 tbsp rum)
Espresso Mascarpone Frosting
- ¼ cup sugar-free coffee liqueur
(or 2 tbsp strong coffee + 1 tbsp vodka + 1 tbsp rum) - 1½ tsp espresso powder
- 8 oz mascarpone cheese, softened
- ¾ cup powdered Swerve, divided
- 1 cup heavy whipping cream
- 1 tsp vanilla extract
Optional Garnish
- Keto chocolate sprinkles
- Whole coffee beans
Instructions
Make the Cake
-
Preheat oven to 350°F (175°C).
Grease two 6-inch round cake pans, line bottoms with parchment, and lightly grease again. - In a medium bowl, whisk together:
almond flour, cocoa powder, protein powder, baking powder, espresso powder, and salt. - In a large bowl, beat butter and Swerve until light and fluffy (about 2 minutes).
- Beat in eggs and vanilla until smooth and creamy.
- Add the dry ingredients in two additions, alternating with the coffee liqueur.
Mix just until combined, scraping the bowl as needed. - Divide batter evenly between pans.
Bake 30–35 minutes, until tops are firm and a toothpick comes out mostly clean. - Cool cakes 30 minutes in pans, then remove and cool completely on a wire rack.
- Once fully cooled, slice each cake horizontally to create 4 layers total.
Trim domes if necessary for even stacking.
Make the Frosting
- Gently warm the coffee liqueur and dissolve the espresso powder.
Let cool to room temperature. - Beat mascarpone with ½ cup powdered Swerve until smooth.
Mix in 2 tbsp of the coffee mixture. - In a separate bowl, whip heavy cream with remaining sweetener and vanilla
until stiff peaks form. - Add mascarpone mixture to whipped cream and beat on medium until combined.
- Beat in remaining coffee mixture until frosting holds stiff peaks.
Assemble the Cake
- Place one cake layer on a serving plate.
Spread about ½ cup frosting evenly on top. - Repeat with remaining layers.
- Frost the sides and top. Reserve a little frosting for decorative piping if desired.
Garnish (Optional)
- Decorate the top with coffee beans
- Sprinkle keto chocolate sprinkles over the cake
- Press sprinkles gently around the base for a finished look
Tips for Success
- Use room-temperature ingredients for the smoothest batter and frosting
- Slice cakes only when fully cooled to avoid crumbling
- Chill the cake briefly before slicing for cleaner cuts
- Flavor deepens after a few hours in the fridge
Storage
- Refrigerator: Up to 5 days (covered)
- Freezer: Freeze slices individually for up to 2 months
Final Thoughts
This Chocolate Kahlúa Cake is bold, elegant, and unapologetically indulgent — proof that keto desserts can be just as luxurious as traditional ones. Every bite delivers chocolate intensity, espresso warmth, and creamy richness without the sugar crash.
If you love desserts that feel like a splurge but still align with your goals, this one deserves a permanent spot in your recipe collection. 🍫☕
