Chocolate Cake with Raspberry

There’s just something about the combination of rich chocolate and tart raspberries that I never get tired of. The deep chocolate flavor paired with the fresh acidity of the raspberries makes for such a good contrast, and this is one of those cakes that always seems to disappear quickly. It’s rich, fresh, and just the right amount of indulgent.

The spiral can be a little tricky, as it needs the right temperature and a completely frozen mold to come out nicely. Just make it well in advance and give it plenty of time in the freezer. It’s a little extra work, but I think it looks so pretty on the cake that it’s worth trying.

Happy baking <

Day 1

Nutella & Raspberry Crunch:

  • 30 g caster sugar
  • 15 g shelled hazelnuts
  • 65 g milk chocolate (33%)
  • 35 g Nutella
  • 35 g cornflakes
  • a pinch of salt
  • 2 tsp raspberry powder
  1. Toast the hazelnuts for 5–7 minutes at 175°C / 347°F in the oven.
  2. Gently melt the sugar into a golden caramel in a saucepan, stir in the nuts, and pour the mixture onto a sheet of parchment paper. Let the nuts cool.
  3. Finely chop the nuts.
  4. Gently melt the chocolate (if necessary, over a double boiler). Set the saucepan aside.
  5. Stir the finely chopped hazelnuts, lightly crushed cornflakes, salt, Nutella, and raspberry powder into the chocolate.
  6. Roll out the crunchy layer flat between two sheets of parchment paper and place it in the freezer for 5 minutes.
  7. Then cut out a base using a cookie cutter or cake ring (14 cm in diameter).
  8. Place the cut-out crunchy layer in a cake ring (14 cm in diameter) lined with parchment paper and an acetate sheet on the bottom. Make sure it lies even and flat.

Tips & Notes:

  • Don’t chop the nuts too finely, as this will reduce the crunch effect.
  • Level the surface with a glass or a spoon.

Day 1

Milk Chocolate Brownie:

  • 75 g dark chocolate (54%)
  • 75 g butter
  • 75 g caster sugar
  • 100 g eggs (appeox. 2 medium eggs)
  • 1 tsp all-purpose flour
  • 50 g milk chocolate (33%)
  1. Coarsely chop the milk chocolate.
  2. Slowly melt the butter in a saucepan (it shouldn’t be too hot, as this can cause the chocolate to separate later). Over low heat, add the dark chocolate. Stir until all the dark chocolate has melted.
  3. Remove the saucepan from the heat and stir in the sugar. Lightly beat the eggs with a fork in a separate bowl.
  4. Let the batter cool slightly, then gradually add the eggs while whisking with a hand whisk. Finally, fold in the flour and the chopped milk chocolate.
  5. Pour the batter into a lined 14 cm cake ring or springform pan. Bake the base at 180°C / 356°F for about 20–23 minutes. It should be soft in the middle and feel slightly underbaked.
  6. Let the brownie cool completely. Place the brownie in the cake ring on top of the crunch layer. Smooth the surface of the brownie slightly with a glass.

Tips & Notes:

  • If baking with pastry rings, use two rings of different sizes and place a piece of baking paper in between to keep the batter contained.

Day 1

Raspberry Curd:

  • 0.5 gelatin sheet (1 sheet = 1.75 g, bloom value 240)
  • 350 g raspberries (Should make 115 ml purée total, use 50 ml for this layer, and save the rest of the purée for the raspberry crémeux)
  • 2.5 tbsp lemon juice
  • 50 g eggs (approx. 1 medium egg)
  • 15 g egg yolks (approx. 0.75 of an egg yolk)
  • 50 g caster sugar
  • 25 g butter
  1. Soak the gelatin sheets in cold water for 5–10 minutes.
  2. Heat the raspberries until tender, then blend them into a smooth purée using an immersion blender. Measure out 50 ml of the purée for the curd and reserve the remaining purée for the raspberry crémeux. Reserve the rest of the purée for the raspberry crémeux.
  3. Whisk together the raspberry purée, lemon juice, egg, egg yolk, and sugar in a saucepan. Slowly heat to a boil while whisking constantly.
  4. Let the cream simmer for a couple of minutes until it thickens, while continuing to whisk constantly. Be careful not to use too high a heat, as this can cause the cream to burn. Simmer gently for a couple of minutes while whisking constantly until the cream thickens.
  5. Remove the saucepan from the heat and stir in the butter, cut into cubes. Then add the gelatin.
  6. Strain the raspberry curd through a fine-mesh strainer. Finally, blend with an immersion blender until completely smooth.
  7. Spread the curd on top of the brownie.
  8. Let the cake set completely in the freezer for at least 3 hours.

Tips & Notes:

  • Cook the curd over medium heat to avoid burning and heating the eggs too much, while constantly whisking.
  • Keep whisking until the curd thickens and increases in volume. This may take several minutes.

Day 1

Raspberry Chocolate Crémeux:

(This recipe makes two spirals, so you’ll have an extra one in case the first one doesn’t come out of the mold nicely. If you only want to make one spiral, you can halve the recipe)

  • 0.5 gelatin sheet (1 sheet = 1.75 g, bloom value 240)
  • 120 g milk chocolate (33%)
  • 40 g egg yolks (approx. 2 medium egg yolks)
  • 20 g caster sugar
  • 100 ml heavy cream (min. 35%)
  • (65 ml raspberry purée, leftover from the raspberry curd layer)
  1. Soak the gelatin in cold water for 5–10 minutes.
  2. Gently melt the chocolate (if necessary, over a double boiler) and set it aside in a bowl.
  3. Quickly whisk the egg yolks and sugar together in another bowl.
  4. Heat the heavy cream and raspberry purée to a boil in a small saucepan. When the mixture reaches a boil, pour it over the egg yolk/sugar mixture while whisking briefly.
  5. Pour the mixture back into the saucepan and gently heat it to 83°C / 181°F. It’s important to be precise with this, as the temperature is crucial for the spiral to come out of the mold.
  6. Remove the saucepan from the heat, strain the mixture, and whisk in the gelatin.
  7. Pour the hot mixture over the chocolate while stirring in the center with a spatula until it comes together.
  8. Place the spiral mold (I used a Tourbillon Ø14 mold from Silikomart) on a cutting board. Transfer the crémeux to a piping bag with a small opening at the tip that matches the size of the spiral. This recipe makes enough crémeux for two spirals. Pipe the crémeux evenly into two spiral molds. This prevents air bubbles. Finally, tap the mold gently on the table until all air bubbles are removed.
  9. Place the mold in the freezer for at least 24–48 hours to ensure the spiral can be removed from the mold, as it must be completely frozen. As a reminder, you are making two molds in case the first one doesn’t come out perfectly, but you can also halve the crémeux recipe if you prefer to make one.

Day 2

Chocolate Mousse:

  • 2 gelatin sheets (1 sheet = 1.75 g, bloom value 240)
  • 200 g milk chocolate (33%)
  • 300 ml heavy cream (min. 35%)
  1. Soak the gelatin sheets in cold water for 5–10 minutes.
  2. Gently melt the chocolate (if necessary, in a double boiler) and set it aside in a bowl.
  3. Heat 100 ml of heavy cream to a boil. Remove the saucepan from the heat and whisk in the gelatin.
  4. Pour the hot heavy cream over the chocolate while stirring in the center with a spatula until it comes together. Let the mixture cool to lukewarm.
  5. Whip 200 ml of heavy cream to soft peaks and fold it into the mixture that has cooled to lukewarm (if it’s too warm, it may cause the heavy cream to separate).
  6. Pour the mousse into a 16 cm diameter silicone mold lined with an acetate sheet (since the cake will rise higher than the mold).
  7. If the mousse is a little runny, let it set slightly in the refrigerator before adding the frozen cake. As a rule of thumb, it is ready when you can dip the end of a spoon into the mousse and a soft peak forms when you lift it out.
  8. Remove the frozen cake from the freezer and place it into the chocolate mousse with the raspberry curd facing down.
  9. Place the cake in the freezer overnight so it can set completely.

Tips & Notes:

  • Only heat the cream almost to a boil before pouring it over the chocolate to avoid seizing the chocolate.
  • Whip the heavy cream to soft peaks, as overwhipped cream can result in a dense and grainy mousse.

Day 3

Decoration:

  • 100 g milk chocolate (33%)
  • 340 g fresh raspberries
  • flowers (edible or secured with safety seal / edible wax)

Day 3

Chocolate Ribbon:

Cut a piece of acetate sheet measuring 1.5 cm x 53 cm and lay it flat on the kitchen counter.

  1. Place a cake ring (16 cm in diameter) in the refrigerator.
  2. Temper the milk chocolate.
  3. Pour the chocolate over the acetate sheet, smooth the surface with a small palette knife, peel the acetate sheet off the counter, and run your fingers along the side of the acetate sheet to remove any chocolate residue. Let the chocolate set a little.
  4. Once the chocolate has almost set, wrap the ribbon around the cold cake ring with the chocolate facing inward, and return it to the refrigerator. If the chocolate is too runny or hasn’t set, you won’t be able to remove it from the cake ring. So it’s important that the chocolate has almost set before wrapping the ribbon around the cake ring.
  5. Remove the acetate sheet once the chocolate has set.
  6. Carefully wrap the ribbon around the cake.

Day 3

Assembly:

  1. Remove the frozen cake from the mold and place it on a cake platter.
  2. Remove the frozen spiral from the mold and place it on top of the cake.
  3. Garnish with fresh raspberries around the spiral. Be careful not to crush the outer edge of the spiral with the berries; place them gently around it.
  4. Garnish with flowers and flower petals (dipped in edible wax, if necessary).

Cake Layer Overview:

Cake Base:
Milk Chocolate Brownie 15 minutes

Crunch:
Nutella & Raspberry Crunch 15 minutes

Creamy Elements:
Raspberry Chocolate Crémeux 30 minutes Raspberry Curd 20 minutes

Mousse:
Chocolate Mousse 25 minutes

Recipe Details:

Skill Level: Intermediate

Categories: Entremet Cakes, Seasonal

Yield & Time:

Servings / Yield: 6–8 slices

Total Active Working Time: 1 hour & 45 minutes
Approximate hands-on time only. Excludes weighing ingredients, baking, cooling, freezing, resting and assembly time, as well as the time required to prepare chocolate decorations.

This recipe may include affiliate links.

troubleshooting guide

Cake Base

Issue Cause Fix
  • Brownie is too dry or crumbly
  • Overbaking or oven too hot
  • Bake slightly less time
  • Aim for slightly underbaked center
  • Brownie is raw in the middle
  • Underbaking
  • Extend baking time slightly and test with a small fork that should show a bit of batter but not fully liquid batter
  • If the recipe includes nuts or another topping: The topping browns or burns before the brownie is fully baked.
  • Topping exposed to heat for too long before the brownie has finished baking
  • Place a piece of tin foil on top of the cake and put it back in the oven until the brownie is done
  • Chocolate seized
  • Butter or chocolate overheated
  • Melt gently over low heat; avoid direct high heat
  • Use a waterbath
  • Brownie too liquid / doesn’t set
  • Eggs overwhipped
  • Only mix with a hand whisk, not an electric mixer

Crunch

Issue Cause Fix
  • Crunch is too hard
  • Chocolate used has too high a cocoa percentage
  • Use a white chocolate around 28% cocoa / milk chocolate 33% for a softer crunch texture
  • Crunch is soft
  • Biscoff was heated together with the chocolate
  • Melt the chocolate first, then stir in Nutella off the heat
  • The crunch layer wasn't fully set before the next layer was added
  • Freeze the crunch layer completely before pouring on the next layer
  • Caramelized nuts taste bitter
  • Caramel is too dark
  • Only melt the sugar to a light golden caramel
  • Caramelized hazelnuts are soft after being mixed with the other ingredients
  • Nuts haven’t cooled before being chopped
  • Let the nuts cool completely before chopping them into smaller pieces

Creamy Element

Issue Cause Fix
  • Crémeux is grainy or split
  • Cream was overheated or cooked too fast; chocolate seized
  • Ensure cream is only heated to just below boiling. Stir gently and use a thermometer to avoid exceeding 83°C
  • Crémeux is too runny
  • Mixture not cooked long enough or incorrect gelatine ratio
  • Ensure the mixture reaches exactly 83°C. Confirm correct gelatine quantity and bloom time
  • Chocolate did not emulsify
  • Chocolate too cool or cream added too quickly
  • Ensure the chocolate is warm and the cream is poured slowly while stirring in the center
  • Lumpy texture
  • Eggs scrambled during cooking or mixture wasn’t strained
  • Cook gently over low heat and always strain the mixture before adding gelatin
  • Air bubbles in final texture
  • Aggressive blending or whisking
  • Blend with an immersion blender slowly and keep the head submerged to reduce air incorporation
  • Crémeux did not set properly
  • Gelatin not fully dissolved or not enough chilling time
  • Ensure gelatin is completely melted and let the crèmeux chill overnight with plastic wrap touching the surface
  • If using a spiral mold: Crémeux has air bubbles
  • Air trapped in the narrow parts of the mold
  • Tap the mold gently on the kitchen counter and run a toothpick through the spiral to release trapped air bubbles
  • If using a spiral mold: Crémeux won’t release cleanly from the mold
  • Crémeux is not fully frozen
  • Freeze for 24–48 hours, or until completely solid, before unmolding
Issue Cause Fix
  • Curd is grainy
  • Heat was too high or not stirred enough
  • Cook gently and whisk constantly to prevent curdling
  • Curd is too thin
  • Not cooked long enough or too little gelatin
  • Cook longer and ensure gelatin is measured correctly
  • Cook until the curd increases in volume and thickens
  • Curd layer leaked
  • Layer not fully set or poured too early
  • Freeze the previous layer before adding curd
  • Many egg leftovers in the curd
  • Overheating curd
  • Keep it at a medium heat while constantly whisking
  • Not straining the curd
  • Strain the curd before hand blending it

Mousse & Cream

Issue Cause Fix
  • Mousse is runny
  • Gelatine not activated, not enough chilling time, too weak gelatin
  • Ensure gelatine is fully soaked and dissolved; chill mousse thoroughly before unmolding, ensure bloom value matches recipe
  • Whipped cream too soft
  • Whip cream to soft peaks, but not too loose
  • Mousse is grainy or seized
  • Chocolate or cream overheated
  • Let ganache cool to 29–33°C before folding in whipped cream
  • Cream added too quickly or too cold
  • Temper mixture gently, fold in cream in 2–3 batches
  • Whipped cream overwhipped
  • Only whip to soft peaks
  • Overmixing after folding
  • Fold just until incorporated, do not stir aggressively
  • Mousse collapsed after assembly
  • Mousse not set before layering
  • Allow mousse to partially set in mold before adding cake or inserts
  • Insert (e.g., cake layer) pushed down too hard
  • Gently place insert, don't press down
  • Mousse is too firm / rubbery
  • Too much gelatine
  • Reduce gelatine or use a more precise scale
  • Gelatine not evenly dispersed
  • Fully melt and strain gelatine mixture before adding to ganache
  • Mousse has air bubbles / holes
  • Folding too aggressively or too fast
  • Fold gently and slowly to preserve even texture
  • Not tapping the mold after filling
  • Lightly tap the mold on the counter to remove air pockets
  • Mousse stuck to mold or cracked when unmolding
  • Unmolded too early or mold not properly prepared
  • Freeze until completely set

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