Sugar-Free Tiramisu: Low-Carb Italian Dessert

Tiramisu is one of those desserts that seems impossible to make blood-sugar friendly. The classic version stacks sugar-soaked sponge fingers, sweetened mascarpone, and a dusting of cocoa, then leans on the coffee to balance all that sweetness. Strip out the sugar and the wheat sponge and you might assume there is nothing left. There is, in fact, plenty. The flavor of tiramisu lives in the espresso, the cocoa, and the rich tang of mascarpone, none of which depend on sugar at all. With a zero-glycemic sweetener and an almond-flour sponge standing in for ladyfingers, you can build a tiramisu that lands near 6 grams of net carbs per serving and tastes like the real thing.

Which Sweeteners to Use Here

Tiramisu cream needs a sweetener that dissolves cleanly and stays smooth after chilling, because any grittiness shows up in a cold, soft dessert. A monk fruit and erythritol blend is our first choice for the mascarpone layer. It measures close to sugar, dissolves into the whipped cream and egg base without effort, and erythritol is glycemically inert, so it is subtracted in full when you count net carbs. Allulose is the other strong candidate; it stays soft, never crystallizes, and is useful if you want to lightly toast the almond sponge for color. For the sponge itself, either works.

A word of caution on what to keep out. Jaggery, honey, maple syrup, coconut sugar, and date paste are all still sugar as far as your glucose is concerned, regardless of how natural they sound. They will spike blood sugar much like table sugar. And maltitol, the sugar alcohol most common in cheap “sugar-free” sweets, has a real and measurable glucose effect, so it does not belong here. If you want the fuller picture on how sugar alcohols are counted, see our guide to the sugar alcohols carb-counting gray zone.

The Recipe

This makes one 8x8 inch tiramisu, cut into 9 servings. There are two components: a quick almond-flour sponge that replaces the ladyfingers, and the mascarpone cream.

Almond-Flour Sponge

• 1.5 cups (150 g) blanched almond flour
• 3 large eggs, separated
• 1/4 cup (48 g) monk fruit and erythritol blend
• 1 tsp baking powder
• 1/2 tsp vanilla extract
• Pinch of salt

Heat the oven to 165C (330F) and line the 8x8 pan with parchment. Beat the egg whites with the pinch of salt to soft peaks. In a separate bowl, whisk the yolks with the sweetener and vanilla until pale, then fold in the almond flour and baking powder. Gently fold the whites into the yolk mixture in two additions to keep the air in. Spread into the pan and bake 18 to 20 minutes until set and lightly golden. Cool completely, then slice horizontally or into strips so it can soak up coffee.

Mascarpone Cream and Assembly

• 8 oz (225 g) mascarpone, softened
• 1 cup (240 ml) heavy cream, cold
• 1/3 cup (64 g) monk fruit and erythritol blend
• 2 large egg yolks
• 1 tsp vanilla extract
• 3/4 cup (180 ml) strong brewed espresso, cooled
• 1 tbsp unsweetened cocoa powder, for dusting

Whisk the egg yolks with the sweetener over a bowl of barely simmering water until thick and pale, about 4 minutes, then cool. Beat the cold heavy cream to firm peaks. In a third bowl, loosen the mascarpone with the vanilla, fold in the cooled yolk mixture, then fold in the whipped cream in two additions. Brush or dip the sponge pieces in the cooled espresso, just enough to moisten without sogging. Layer half the sponge in the pan, spread half the cream, repeat, and finish with cream on top. Cover and chill at least 6 hours or overnight. Dust generously with cocoa just before serving.

Per serving (1 of 9): ~285 kcal, 6 g net carbs, 8 g protein, 26 g fat. The fat is high by design, which is part of what keeps this dessert satisfying in a small portion. If you want to stretch the batch further or scale the pan size, our note on recipe scaling and calorie scaling covers how to keep the per-serving math honest.

How to Log This in CalEye

You have two good paths, depending on whether this is a one-off treat or a recipe you will make again.

For a spur-of-the-moment slice, the fastest route is photo logging. Snap the plated tiramisu and CalEye estimates calories and macros from the image. Photo estimates are excellent for portion awareness and day-to-day tracking, especially for plated foods where you are eyeballing the size anyway.

For a recipe you plan to repeat, the more precise approach is to build it once in My Recipes. Enter each ingredient by weighed amount, set the yield to 9 servings, and CalEye stores the per-serving macros. From then on you log one serving with a tap and the numbers are consistent every time. This is where the sweetener handling matters: CalEye applies net-carb logic to sugar alcohols automatically, subtracting erythritol in full because it is glycemically inert, and counting xylitol and maltitol at roughly half because they do carry a partial glucose load. So when you enter the monk fruit and erythritol blend, the erythritol grams come back out of the net-carb total rather than inflating it. If the difference between total and net carbs is new to you, start with net carbs vs total carbs and which to count.

Logging the homemade version also tends to be more accurate than relying on a generic “tiramisu” database entry, which assumes the sugar-laden classic and will badly overstate your carbs for this build.

A Few Notes on Texture and Flavor

The almond sponge will not behave exactly like a wheat ladyfinger; it is more tender and absorbs coffee a little faster, so go light when you moisten it. If you prefer a firmer bite, toast the sliced sponge for a few minutes before soaking. The cocoa dusting should go on at the last moment, since it draws moisture and turns muddy if it sits. And resist the urge to oversweeten the cream, the espresso and cocoa carry real bitterness that the dessert needs, and a restrained hand on the sweetener gives you a more grown-up, balanced tiramisu.

If this recipe earns a place in your rotation, you may want a few more low-carb endings to alternate with; our roundup of sugar-free dessert recipes collects several built on the same principles.

References

1. U.S. Department of Agriculture, Agricultural Research Service. FoodData Central. Washington, DC: USDA, 2024.
2. American Diabetes Association. “Facilitating Positive Health Behaviors and Well-being to Improve Health Outcomes: Standards of Care in Diabetes.” Diabetes Care, vol. 47, suppl. 1, 2024, pp. S77-S110.
3. Mazi TA, Stanhope KL. “Erythritol: An In-Depth Discussion of Its Potential to Be a Beneficial Dietary Component.” Nutrients, vol. 15, no. 1, 2023, p. 204.