Hi, I’m Raya! Today we are transforming Italy’s favorite dessert into a celebration cake: the Decadent Tiramisu Layer Cake. Featuring fluffy vanilla sponge cake soaked in rich espresso syrup, this Decadent Tiramisu Layer Cake is layered with a velvety mascarpone cream frosting and dusted with dark cocoa powder. It delivers all the iconic flavors of traditional tiramisu!

Why You’ll Love This Recipe

🇮🇹 Iconic Italian Flavor: Brings the true taste of classic tiramisu into a gorgeous layer cake.

☕ Rich Espresso Soak: Deep coffee flavor infuses every single crumb of the sponge cake.

☁️ Velvety Mascarpone Filling: Light, silky cream made with real Italian mascarpone cheese.

🍫 Dusting of Dark Cocoa: Adds that signature bittersweet chocolate finish on top.

🎉 Stunning Celebration Dessert: Looks incredibly sophisticated for birthdays, dinner parties, and holidays.

Key Ingredients for Decadent Tiramisu Layer Cake

Vanilla Sponge Cake Layers: Light, airy cake layers designed to absorb the espresso soak without collapsing.

Freshly Brewed Espresso & Kahlúa: Create a bold, aromatic syrup for soaking the sponge layers.

Italian Mascarpone Cheese: The rich, creamy foundation of the filling that gives tiramisu its authentic character.

Heavy Whipping Cream & Powdered Sugar: Whipped into soft peaks and folded with mascarpone for a light texture.

Dark Cocoa Powder: Dusted generously over the top and between layers for a classic cocoa finish.

Baker’s Note: Make sure your espresso syrup is completely cold before brushing it over the cake layers so the mascarpone frosting stays firm! For more coffee dessert techniques, check out Serious Eats’ tiramisu guide.

How to Make Decadent Tiramisu Layer Cake

Step 1: Bake two 8-inch vanilla sponge cake layers, let them cool completely, and slice each layer in half horizontally to create four thin rounds.

Step 2: Mix freshly brewed strong espresso, sugar, and coffee liqueur (optional) in a bowl and let it cool completely.

Step 3: Whip heavy cream and powdered sugar until stiff peaks form. In a separate bowl, beat mascarpone cheese until smooth, then fold together.

Step 4: Place the first cake layer on a plate and brush generously with cold espresso syrup using a pastry brush.

Step 5: Spread a layer of mascarpone frosting over the soaked sponge, dust lightly with cocoa powder, and repeat with remaining layers.

Step 6: Frost the outside of the cake smoothly, dust the top liberally with dark cocoa powder, and chill for at least 4 hours before slicing.

Raya’s Secret Tips for Success

Don’t Over-Soak: Brush the coffee syrup generously, but don’t submerge the cake so it stays sturdy when sliced.

Chill Mascarpone: Keep your mascarpone cheese cold right up until mixing so the frosting maintains good structure.

Dust Cocoa Before Serving: For the freshest presentation, give the top a final dusting of cocoa powder right before bringing it to the table.

Delicious Variations

🍫 Chocolate Chip Tiramisu: Sprinkle mini dark chocolate chips between each frosted layer.

🍪 Ladyfinger Crust Border: Press ladyfinger biscuits vertically around the sides for a classic tiramisu look.

🚫 Non-Alcoholic Version: Omit the coffee liqueur and add 1 teaspoon of vanilla extract to the espresso soak.

How to Store This Decadent Tiramisu Layer Cake

Room Temperature: Not recommended due to dairy and mascarpone content.

Fridge: Keep in an airtight cake dome in the fridge for up to 4 days; the coffee flavors get even better on day two!

Freezing: Freeze assembled cake without cocoa dusting for up to 1 month. Thaw in fridge overnight and dust with cocoa before serving.

Craving more rich celebration cakes? Check out my Classic American Carrot Cake
or my famous Ultimate Chocolate Cake for another showstopping layer cake!

Frequently Asked Questions

Can I use instant coffee instead of espresso? Yes! Use strong instant espresso powder dissolved in hot water for a bold coffee flavor.

Why did my mascarpone frosting curdle? Over-whipping mascarpone can cause it to separate. Beat it just until smooth, then gently fold in whipped cream.

How far in advance can I make this cake? You can assemble it a full 24 hours ahead; tiramisu tastes even better after sitting overnight in the fridge.