Low Carb Tiramisu Mug Cake

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January 6, 2026

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Indulge Guilt-Free: Low Carb Tiramisu Mug Cake

Craving a rich and creamy dessert without the carb overload? Look no further! This Low Carb Tiramisu Mug Cake offers all the decadence of traditional tiramisu in a quick, easy, and keto-friendly format. With layers of coffee-soaked cake and luscious mascarpone frosting, this dessert is perfect for satisfying your sweet tooth without derailing your diet. Let’s dive into the details of this delightful treat!

Why You’ll Love This Recipe

  • Quick & Easy: Ready in under 15 minutes, this recipe is perfect for busy weeknights or a spontaneous dessert craving.
  • Low Carb: With only 2.1g of carbohydrates per serving, it fits perfectly into a keto or low-carb lifestyle.
  • Rich & Creamy: The mascarpone frosting adds a luxurious touch that makes every bite feel like a special occasion.
  • Customizable: Easily adapt the flavors to your liking with different extracts or toppings.

Ingredients Breakdown

For the Cake

  • Flaxseed Meal & Almond Flour: These provide a nutty flavor and maintain the cake’s low-carb profile.
  • Instant Espresso & Kahlua Extract: These bring the signature coffee flavor to the cake, mimicking traditional tiramisu.
  • Heavy Cream & Eggs: These add richness and moisture, keeping the cake tender and delicious.
  • Vanilla Liquid Stevia: A sugar-free sweetener that rounds out the flavors without adding carbs.

Coffee Syrup

  • Brewed Coffee & Swerve Sweetener: Create a syrup to soak the cakes, infusing them with flavor and moisture.
  • Optional Spirits: Add a touch of Kahlua or brandy for a more authentic taste, or keep it alcohol-free with rum extract.

Mascarpone Frosting

  • Mascarpone Cheese & Heavy Whipping Cream: Whip these together for a creamy, indulgent frosting that’s low in carbs and high in satisfaction.

Optional Toppings

  • Unsweetened Cocoa Powder & Coffee Beans: Enhance the visual appeal and flavor of your tiramisu mug cake.

Step-by-Step Instructions

Cake Preparation

  1. Combine Dry Ingredients: In a bowl, whisk together the flaxseed meal, almond flour, baking powder, instant espresso, and salt.
  2. Mix Wet Ingredients: In another bowl, whisk the eggs, heavy cream, kahlua extract, and vanilla liquid stevia until fully combined.
  3. Blend & Pour: Stir the wet ingredients into the dry ingredients until smooth. Grease two shallow ramekins and pour the batter evenly.

Microwave & Soak

  1. Cook the Cakes: Microwave each ramekin individually for 1 minute. If using deeper dishes, add an extra 30 seconds.
  2. Soak with Syrup: Use a skewer to poke holes in the cakes. Mix the coffee syrup ingredients and soak each cake with half of the syrup. Let them cool.

Frosting & Assembly

  1. Make the Frosting: In a stand mixer, beat the mascarpone and heavy whipping cream with the remaining coffee syrup until smooth. Taste and adjust sweetness if needed.
  2. Assemble the Cake: Spread half the frosting on one cake, layer the second cake on top, and finish with the remaining frosting. Add optional toppings if desired.
  3. Chill & Serve: Refrigerate for at least 30 minutes to an hour before serving to allow the flavors to meld.

Nutritional Information

A delicious plate of Low Carb Tiramisu Mug Cake
  • Calories: 220kcal
  • Carbohydrates: 2.1g
  • Protein: 5.7g
  • Fat: 22.2g
  • Saturated Fat: 10.4g
  • Cholesterol: 142mg
  • Sodium: 182mg
  • Fiber: 1.1g
  • Sugar: 0.2g

Tips & Tricks

  • Ramekin Size: Use shallow ramekins to ensure even cooking. If deeper dishes are used, adjust the microwave time accordingly.
  • Flavor Variations: Experiment with different extracts like almond or hazelnut for a unique twist.
  • Storage: Keep leftovers in the refrigerator for up to two days for optimal freshness.

Conclusion

This Low Carb Tiramisu Mug Cake is a delightful dessert that captures all the beloved flavors of classic tiramisu without the guilt. It’s perfect for those following a low-carb or keto diet, or anyone looking for a quick and satisfying sweet treat. Enjoy the luxurious taste and texture, and feel free to customize it to suit your personal preferences. Happy baking!

Low Carb Tiramisu Mug CakeLow Carb Tiramisu Mug Cake

A delicious plate of Low Carb Tiramisu Mug Cake

Low Carb Tiramisu Mug Cake

This quick and easy mug cake captures the flavors of traditional tiramisu with a low-carb twist, perfect for a delightful dessert or indulgent snack.
Prep Time 10 minutes
Cook Time 2 minutes
Chill Time 30 minutes
Total Time 42 minutes
Servings: 2 cakes
Course: Dessert
Cuisine: Italian
Calories: 220

Ingredients
  

Cake
  • 1 tbsp Flaxseed Meal
  • 3 tbsp almond flour
  • 1/2 tsp baking powder
  • 1 tsp instant espresso
  • 1/8 tsp salt
  • 2 eggs
  • 3 tbsp heavy cream
  • 1 tsp kahlua amaretto, brandy or rum extract
  • 1 tsp vanilla liquid stevia
Coffee Syrup
  • 1/2 cup hot brewed coffee
  • 1 tbsp Swerve sweetener
  • 1 tsp kahlua amaretto or brandy (optional) or use rum extract
Mascarpone Frosting
  • 2 ounces mascarpone cheese
  • 2 ounces heavy whipping cream
Optional Topping
  • 2 tbsp unsweetened cocoa powder and coffee beans

Equipment

  • Microwave
  • Stand Mixer

Method
 

  1. Whisk the first five ingredients together to make the cake.
  2. Whisk the rest of the ingredients for the cake in another bowl then stir well to combine with the dry.
  3. Grease two shallow ramekins, I used quiche ramekins.
  4. Pour batter evenly into each dish.
  5. Microwave one cake at a time for 1 minute, may need additional 30 seconds if using a deeper dish as opposed to a shallow one.
  6. Once cooked poke some holes all around the cake using a skewer or toothpick.
  7. Stir the coffee syrup ingredients together and use just half the amount to soak the cakes in their dish. Allow to cool completely before continuing.
  8. Place the frosting ingredients into a stand mixer and add the remaining coffee syrup.
  9. Blend until completely smooth. Taste and adjust the sweetness of the frosting.
  10. Spread half the frosting over one cake. Layer the second cake over the first and spread the rest of the frosting on top.
  11. Decorate with optional toppings if desired.
  12. Refrigerate for at least 30 minutes to an hour before serving.

Notes

For a stronger coffee flavor, consider soaking the cakes in more coffee syrup. This recipe is perfect for a quick dessert or a delightful snack. Feel free to experiment with different extracts to find your preferred flavor profile.

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CREATED BY POLLY

Polly is the creator of Adrian Recipes, where she shares easy, family-friendly recipes designed for busy home cooks.

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