Easy Keto Tiramisu Cake

A homemade coffee-flavored Italian Keto Tiramisu dessert made without lady fingers and uses a low carb sponge cake instead. This easy keto recipe can be made into individual cups or a whole cake to fit your needs!

Even though this recipe is low carb and gluten free, the taste is just like an authentic Tiramisu. Don't be taken aback by the sponge cake layers as they taste just like lady fingers that have been soaked in coffee! For other chocolate desserts, you'll love to try my chocolate zucchini cake or keto chocolate cheesecake.

I love buying the Costco Tiramisu here in Japan, but it is unfortunately super high in carbs, so here is my keto version of a traditional Tiramisu.

This recipe is actually the same that I use in my bakery here in Japan and now you'll know how to make tiramisu at home bakery-style, but ketofied!

Table of Contents

• Recipe Video
• How to Make Keto Lady Fingers
• The Filling
• How to Make Tiramisu 🍳
• Troubleshooting Tips
• Equipment Used
• Frequently Asked Questions
• Other Low Carb Dessert Recipes
• Recipe Card
• Read Comments

How to Make Keto Lady Fingers

A classic Tiramisu will use savaoiardi, lady fingers, but because they are high in carbs and made with wheat, this recipe uses a gluten free soft pillowy sponge cake that absorbs coffee really well, stays soft and moist.

The ingredients for this sponge cake is eggs, almond flour, keto sweetener, coffee and psyllium husk powder. Adding psyllium husk powder to the sponge helps it not dry out and stay soft and pillowy even after assembling the tiramisu.

The Meringue

First, you'll want to separate the egg whites and egg yolks into two different bowls. You'll whip up the egg whites with a bit of cream of tartar to help stabilize the egg whites and increase its volume. If you don't have any cream of tartar, simply use ½ teaspoon of white vinegar or lemon juice instead. You'll then whip the eggs until stiff peaks form.

The Sponge Cake ☕

Next you'll want to add the erythritol, stevia, psyllium husk powder, coffee and almond flour (in that order) and mix with a hand mixer between each ingredients. The batter will start to thicken up the longer it sits out.

Finally, you'll add ⅓ of the meringue into the batter and mix with a hand mixer at first just to loosen the batter out. Then add half of the remaining meringue and carefully fold it in. Repeat with the remaining meringue.

Pro Tip💭 : Add ⅓ of the meringue and use a hand mixer to loosen the batter first before folding the rest of the meringue. This will ensure you do not have any dough clumps in the sponge cake.

Carefully spread the sponge cake dough all over a baking tray lined with parchment paper (NOT wax paper) and spread it around evenly with a silicone spatula. I personally used two trays that measured 30x40cm/11x15".

Bake it in the oven for about 17 minutes until golden brown.

The Filling

The delicious mascarpone filling is called zabaglione, or Sabayon in English. It's a rich custard-like cream made egg yolks, keto sweeteners, mascarpone cream and heavy whipping cream.

The Egg Yolk Custard🍮

The first step to making a sabayon is to cook the egg yolks and sweeteners over a double boiler. You'll want to add the egg yolks, erythritol and stevia powder to a heat-proof bowl over a double boiler and whisk the yolks for about 5-7 minutes over medium heat until thickened.

You can use granulated or powdered sweeteners for this step, I've used both and they work equally fine. The custard should not look grainy at all and the erythritol should have completely melted.

The Sabayon

Add the custard over the mascarpone and whisk on low until fully incorporated. Turn off the mixer.

In a separate bowl, whip the heavy cream until stiff peaks. Add the whipping cream into the mascarpone and carefully fold it in. In another bowl, whisk the egg whites until stiff peaks. Fold the egg whites into the cream and you're ready to assemble the tiramisu.

How to Make Tiramisu 🍳

Now that you've finished baking your low carb sponge cake, your coffee is brewed and your sabayon is all ready and whipped, your low carb tiramisu is ready to assemble.

From here on out it's super easy to make this tiramisu. You'll need to cut your sponge up to the size of the dish you'll be using.

Make sure to use a pretty deep dish as this tiramisu is quite tall. You can choose however many layers you want to make, but I personally made 3 layers. I was inspired by the Olive Garden tiramisu as its final layer is super thick and that's just the amount of cream that I like in my desserts!

You'll basically drizzle the rum coffee all over the sponge, spread the sabayon equally and sprinkle a generous amount of cocoa powder on top. Repeat two more times with the remaining ingredients and you have yourself an impressive three layer tiramisu.

Pro Tip💭 : Oil your hands before touching the dough. This will prevent the dough from sticking to your hands.

Now if you want to make individual servings into cups or tiramisu in a glass, you can totally do that too! You'll just need to cut the sponge into small circles that fit the cups you choose. These are the cups that I sell at my keto bakery.

Equipment Used

Frequently Asked Questions

Other Low Carb Dessert Recipes

• Keto Black Forest Cake: An impressive 3 layer chocolate cake with cream cheese frosting and raspberry filling.
• Keto Cheesecake: A delicious crust-free cheesecake that's extremely rich and creamy.
• Keto Cinnamon Rolls: Soft and pillowy cinnamon rolls topped with an easy cream cheese frosting.

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Recipe Card