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French opera cake with chocolate ganache layers
Elegant and classic Opera Cake

Classic French Opera Cake

Author: Flavelo
Recipes Cakes and Desserts
Created by the Dalloyau patisserie in Paris in the 1950s as a tribute to the Opera House dancers. The essence of this cake is visible layering and intense flavors: almond 'Joconde' sponge soaked in strong coffee syrup, alternated with coffee buttercream and dark chocolate ganache. One bite delivers coffee bitterness, almond sweetness, and silky chocolate.
🕒 Prep Time 1 hr
🍳 Cook Time 12 mins
⌛ Total Time 3 hrs
🍽️ Servings 8 servings
🔥 Calories 550 kcal
🌍 Cuisine French

Ingredients

Equipment Needed

  • Large baking sheet (jelly roll pan)
  • Offset spatula
  • Whisk
  • Saucepan

Allergen Information

⚠️ Wheat
⚠️ Egg
⚠️ Milk
⚠️ Tree Nut (Almond)
⚠️ Soy

Instructions

1 ✓

Preheat oven to 400°F (200°C). Line a large baking sheet with parchment paper.

Tip: High heat bakes the thin layer quickly before it dries out.
2 ✓

Mix almond flour, flour, and half the sugar. Whisk eggs until frothy and fold into the dry mix.

Tip: Almond oil can weigh down the foam, so fold gently.
3 ✓

Melt half the butter (approx. 5 tbsp) and drizzle into the batter. Spread thinly onto the pan.

Tip: Fat (butter) keeps the sponge flexible so it doesn't crack.
4 ✓

Bake for 10-12 minutes until just lightly colored. Invert onto a rack, peel off paper, and cool.

Tip: Do not overbake, or it will become brittle.
5 ✓

Ganache: Boil heavy cream, pour over chopped chocolate, and stir until smooth.

Tip: You want a glossy, smooth emulsion.
6 ✓

Coffee Syrup: Mix hot espresso with simple syrup.

Tip: Taste it—it should have a strong coffee kick!
7 ✓

Cut sponge into 3 equal parts. Soak the first with syrup, spread with coffee buttercream (made from remaining butter/sugar) or ganache.

Tip: Be precise with layering; uneven levels show when sliced.
8 ✓

Soak the next layer, spread with ganache. Top with the third layer.

Tip: Press down gently to compact the layers.
9 ✓

Glaze top with melted chocolate, chill, then trim edges to reveal the layers.

Tip: Use a hot knife for clean cuts so the glaze doesn't crack.

Recipe FAQ

What is Joconde sponge?
An almond flour sponge cake that is thinner, flexible, and more flavorful than standard sponge.
Why soak the layers?
Thin sponge dries out quickly; coffee syrup adds flavor and keeps it moist.

Ingredients

  • 3/4 cup All-Purpose Flour
  • 1 cup Almond Flour (finely ground)
  • 1 cup Granulated Sugar
  • 4 large Eggs
  • 2/3 cup Unsalted Butter
  • 7 oz Bittersweet Chocolate (min. 60%)
  • 1 1/4 cups Heavy Cream
  • 1/2 cup Strong Espresso
  • 1/4 cup Simple Syrup (1:1 sugar and water)
  • 1 tsp Vanilla Extract
  • 1 pinch Salt
  • 2 tbsp Cocoa Powder (for dusting)