Matcha Opera Cake Recipe with Step-by-Step Photos

Matcha opera cake is a refined French-Asian dessert that layers almond sponge (joconde), matcha buttercream, and dark chocolate ganache under a glossy matcha glaze. The bitterness of matcha balances the sweetness of the buttercream and chocolate, creating a sophisticated treat that’s perfect for special occasions. This recipe breaks down each component so you can assemble it confidently at home.

Ingredients

For the joconde sponge:
6 large eggs, separated (room temperature)
1 cup (120 g) almond flour
1 cup (120 g) powdered sugar
1/4 cup (30 g) all-purpose flour
1 tbsp (8 g) matcha powder (culinary grade)
3 tbsp (42 g) unsalted butter, melted and cooled
1/4 tsp cream of tartar (optional, for stability)
2 tbsp (25 g) granulated sugar
For the matcha syrup:
1/4 cup (60 ml) water
2 tbsp (25 g) granulated sugar
1 tsp matcha powder
For the matcha buttercream:
3 large egg whites (room temperature)
3/4 cup (150 g) granulated sugar
1 cup (226 g) unsalted butter, softened
1 tbsp (8 g) matcha powder, sifted
1 tsp vanilla extract
For the chocolate ganache:
4 oz (115 g) dark chocolate (60-70%), chopped
1/2 cup (120 ml) heavy cream
2 tbsp (28 g) unsalted butter, softened
For the matcha glaze:
1/2 cup (100 g) white chocolate chips
1/4 cup (60 ml) heavy cream
1 tsp matcha powder, sifted

Instructions

Make the joconde sponge: Preheat oven to 425°F (220°C). Line a 12×16-inch (30×40 cm) baking sheet with parchment paper. In a large bowl, whisk egg yolks, almond flour, powdered sugar, all-purpose flour, and matcha until well combined. Add melted butter and mix until smooth.
In a separate clean bowl, beat egg whites with cream of tartar until soft peaks form. Gradually add granulated sugar and continue beating until stiff, glossy peaks form.
Fold one-third of the egg whites into the yolk mixture to lighten it, then gently fold in the remaining whites until no streaks remain. Spread the batter evenly onto the prepared baking sheet (about 1/4 inch thick). Bake for 8–10 minutes, until the sponge springs back when touched. Let cool completely on a wire rack.
Make the matcha syrup: In a small saucepan, combine water and sugar. Heat over medium, stirring, until sugar dissolves. Remove from heat and whisk in matcha powder until smooth. Set aside to cool.
Make the matcha buttercream: Place egg whites and sugar in a heatproof bowl set over a pot of simmering water (make sure the bowl doesn’t touch the water). Whisk constantly until sugar dissolves and mixture reaches 160°F (71°C) on a food thermometer (this is the USDA FSIS safe minimum for egg dishes). Remove from heat and beat with an electric mixer on high speed until stiff, glossy peaks form and the bowl is cool to the touch (about 5–7 minutes).
With the mixer running, add softened butter a tablespoon at a time, beating well after each addition. If the mixture looks curdled, keep beating until it comes together. Beat in sifted matcha powder and vanilla until smooth and fluffy.
Make the chocolate ganache: Place chopped chocolate in a heatproof bowl. Heat heavy cream in a small saucepan until just simmering. Pour over chocolate, let sit for 2 minutes, then stir until smooth. Add softened butter and stir until glossy. Let cool to room temperature but still spreadable.
Assemble the cake: Cut the cooled sponge into three equal rectangles (about 4×12 inches / 10×30 cm each). Place one layer on a serving plate. Brush generously with matcha syrup. Spread half of the matcha buttercream evenly over it. Top with the second sponge layer, brush with syrup, and spread all the chocolate ganache over it. Top with the third sponge layer and brush with remaining syrup. Refrigerate for 30 minutes to firm up.
Make the matcha glaze: In a small saucepan, heat cream until just simmering. Pour over white chocolate chips and let sit for 2 minutes, then stir until smooth. Whisk in sifted matcha powder until fully incorporated. Let cool slightly until it thickens but is still pourable.
Pour the glaze over the top of the chilled cake, spreading it gently to cover the top and letting it drip down the sides. Use an offset spatula to smooth the top. Refrigerate for at least 30 minutes to set the glaze.
Trim the edges with a sharp knife for a clean look, then slice into 12 pieces using a warm knife (dip in hot water and wipe dry between cuts).

Tips

Use high-quality matcha: Culinary grade is fine for baking, but ceremonial grade will give a brighter green color and less bitterness. Avoid pre-sweetened matcha lattes.
Keep the sponge moist: The syrup is essential—don’t skip it. If your sponge is dry, brush on extra syrup.
Buttercream troubleshooting: If your buttercream curdles, it’s usually because the butter is too cold. Warm the bowl slightly over a water bath for a few seconds, then beat again until smooth.
Chilling is key: Refrigerate the assembled cake before glazing to prevent the layers from slipping. Also chill the final cake before slicing for clean cuts.

Serving Suggestions

Serve matcha opera cake chilled or at room temperature. Pair with a cup of hot green tea or a light jasmine tea to complement the matcha. For a dessert platter, add fresh berries like raspberries or strawberries—their tartness balances the sweetness. A small dollop of unsweetened whipped cream also works nicely.

Variations

Matcha-white chocolate version: Replace the dark chocolate ganache with white chocolate ganache (use 4 oz white chocolate and 1/2 cup cream) for a sweeter, creamier contrast.
Yuzu twist: Add 1 tbsp yuzu juice to the matcha syrup for a citrusy note that brightens the flavor.
Gluten-free: Substitute the all-purpose flour in the sponge with an equal amount of gluten-free flour blend (ensure it contains xanthan gum). The texture will be slightly more delicate.
Simpler buttercream: If you prefer a quicker option, use a stabilized whipped cream (add 1 tbsp cornstarch per cup of cream) mixed with matcha instead of the French buttercream. This will be lighter but less rich.

Storage and Reheating

Store the assembled cake in an airtight container in the refrigerator for up to 4 days. The sponge may soften slightly but will remain delicious. For longer storage, wrap individual slices in plastic wrap and freeze for up to 2 months. Thaw overnight in the refrigerator before serving. Do not microwave the cake—it will melt the buttercream and glaze. Serve chilled or let sit at room temperature for 10–15 minutes before eating.

Frequently Asked Questions

Can I make this cake ahead of time? Yes, you can assemble the cake a day in advance and keep it refrigerated. Add the glaze on the day you plan to serve for the best appearance.

Why did my sponge turn out dense? Overmixing the batter after adding the egg whites can deflate them. Fold gently and stop as soon as no streaks remain. Also, make sure your egg whites are at room temperature before beating.

Can I use a different pan size? Yes, but adjust baking time. A 9×13-inch pan will yield a thicker sponge that may need 12–15 minutes. You can also bake in two 8-inch round pans for a round opera cake, but you’ll need to adjust the layers.

What if my ganache is too thick? If it’s too thick to spread, warm it gently over a water bath or microwave in 5-second bursts, stirring until it reaches the desired consistency.

Can I skip the matcha syrup? The syrup adds moisture and flavor. If you skip it, the cake will be drier. You can substitute with a simple syrup made from water and sugar, or even a light green tea syrup.

Is it safe to eat raw egg whites in the buttercream? The recipe uses a Swiss meringue method, heating the egg whites to 160°F (71°C), which makes them safe. If you have concerns, use pasteurized egg whites.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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