This elegant French masterpiece features delicate layers of almond sponge cake, rich coffee buttercream, and silky chocolate ganache, crowned with a glossy mirror glaze. A sophisticated dessert that looks like edible art and tastes absolutely divine, perfect for impressing dinner guests or celebrating special occasions.
⏱️135 min
📊Hard
👥8 servings
🍽️Dessert
vegetarianfestive
Ingredients
100 galmond flour
150 ggranulated sugar
5 pieceseggs
50 gbutter
40 gall-purpose flour
15 ginstant coffee powder
300 mlheavy cream
200 gdark chocolate
30 mlcoffee liqueur
10 gcocoa powder
1 pinchsalt
Instructions
1PREPARE THE ALMOND CAKE LAYERS: Preheat your oven to 375°F (190°C) and line a 9x13 inch (23x33 cm) baking pan with parchment paper. Combine 100g almond flour with 40g all-purpose flour and a pinch of salt. Melt 50g butter and set aside. Whisk together 3 whole eggs with 75g granulated sugar until the mixture reaches the ribbon stage (pale, thick, and tripled in volume), which should take about 5-7 minutes with an electric mixer. Gently fold the flour mixture into the eggs in two additions, then fold in the melted butter until just combined. Spread the batter evenly into the prepared pan and bake for 12-15 minutes until a toothpick inserted in the center comes out clean and the top is light golden.
2CREATE THE COFFEE BUTTERCREAM: While the cake cools, make the buttercream by creaming 150g softened butter with 75g powdered sugar until light and fluffy, about 3-4 minutes. Dissolve 15g instant coffee powder in 30ml coffee liqueur or hot water, then let it cool to room temperature. Gradually add the coffee mixture to the butter, beating continuously until smooth and well incorporated. The buttercream should be spreadable but hold its shape; if too soft, refrigerate briefly before using.
3PREPARE THE CHOCOLATE GANACHE: Chop 200g dark chocolate into small pieces and place in a heat-safe bowl. Heat 150ml heavy cream until it just begins to steam (do not boil), then pour over the chocolate and let sit for 1-2 minutes to allow the residual heat to soften the chocolate. Whisk gently until completely smooth and glossy, creating an emulsion. If the ganache is too thick, add a little more warm cream; it should be pourable but thick enough to coat.
4ASSEMBLE THE LAYERS: Once the cake has cooled completely, slice it horizontally into three equal layers using a long serrated knife or a cake leveler, working slowly and turning the pan as you cut to ensure even layers. Place the first layer on your work surface or cake board. Spread a thin, even layer of coffee buttercream (about 1/4 inch or 6mm thick) over it using an offset spatula, creating a smooth surface. Top with the second cake layer and repeat with another layer of buttercream.
5ADD THE MIDDLE GANACHE LAYER: Pour approximately half of the chocolate ganache over the second cake layer, spreading it evenly with a spatula to create a uniform layer about 1/4 inch (6mm) thick. Top with the third and final cake layer, pressing gently and evenly so the ganache seals the layers together. Refrigerate the assembled cake for at least 20-30 minutes to allow the ganache to set slightly, making the cake easier to frost.
6FROST AND GLAZE: Spread the remaining coffee buttercream over the top and sides of the cake in a thin, even crumb coat using an offset spatula, smoothing it as much as possible. Return to the refrigerator for 15 minutes to set the crumb coat. Heat the remaining ganache slightly if needed until it's pourable but not hot. Slowly pour the ganache over the top of the cake, allowing it to cascade down the sides and create a smooth, glossy finish. Use a spatula to help guide it if necessary, ensuring complete coverage.
7FINAL TOUCHES AND CHILLING: Dust the top lightly with cocoa powder using a fine sieve for an elegant finish. Refrigerate the finished Opera Cake for at least 2-3 hours or preferably overnight, which allows all the flavors to meld beautifully and makes slicing much cleaner. For the cleanest slices, dip your knife in hot water and wipe it clean between each cut. Serve at cool room temperature for the best flavor and texture, allowing the cake to sit out for 15 minutes before serving if it's been refrigerated.