When you’re searching for an uncompromising dessert for the most demanding sweet tooth, one that combines crunchy peanuts, a fluffy nut sponge, and honest chocolate to easily outshine even the best patisserie, ordinary sheet cakes simply won’t do. Forget about boring pastries—these luxurious nut slices with a cocoa-peanut sponge made from egg whites, rich chocolate-egg yolk cream whipped over steam, chopped nuts, and a glossy chocolate glaze are the absolute top, disappearing from the table in no time. The secret to success lies in a firm egg white foam, perfectly thickened chocolate cream, and letting the dessert rest overnight.
What you’ll need for a large baking tray (approx. 30 x 40 cm):
For the fluffy nut sponge:
- Egg whites: 10 pcs (for a firm foam)
- Granulated sugar: 200 g
- Ground unsalted peanuts: 100 g
- Semi-coarse flour: 5 tablespoons
- Cocoa powder: 1 tablespoon
- Baking powder: 1 packet
For the rich chocolate cream:
- Egg yolks: 10 pcs
- Powdered sugar: 200 g
- Dark chocolate (min. 50% cocoa): 200 g (broken into pieces)
- Butter: 200 g (must be at room temperature)
- Chopped unsalted peanuts: 100 g (for the cream)
- Vanilla sugar: 1 packet
For the glossy chocolate glaze and finishing:
- Dark chocolate: 200 g
- Butter: 2 tablespoons
- Oil: 4 tablespoons (for a beautiful and flexible shine)
- Chopped peanuts: 50 g (for final sprinkling on top)
Step-by-step preparation instructions:
1. Baking the nut sponge: Whip the egg whites and granulated sugar in a clean bowl into a firm, glossy foam. In a separate bowl, mix the semi-coarse flour with baking powder and cocoa; gently fold this dry mixture into the foam using a spatula. Finally, carefully add the ground peanuts and gently mix with a spoon. Spread the batter evenly onto a baking tray (approx. 30 x 40 cm) lined with baking paper and bake in a preheated oven at 180°C for about 20 minutes. Let the baked sponge cool completely.
2. Preparing the egg yolk cream over steam: In a stainless steel or glass bowl, mix the egg yolks with powdered sugar and whip them over a pot of gently simmering water (in a water bath) until the mixture thickens and lightens in color. Then remove the bowl from the heat, add the broken dark chocolate and vanilla sugar. Whisk until the chocolate is completely melted and combined with the base. Once the mixture is fully cooled, gradually beat in the softened butter by spoonfuls, and finally stir in the chopped peanuts.
3. Assembling the dessert: Evenly spread the cooled chocolate cream over the prepared nut sponge and carefully smooth the surface.
4. Glossy glaze and chilling: In a saucepan over steam, melt the dark chocolate together with the butter and oil. Mix thoroughly to create a perfectly smooth and glossy glaze, which you immediately pour over the cream and spread evenly. Immediately sprinkle the surface with the remaining chopped peanuts. Place the dessert in the fridge, preferably overnight, so all the flavors can meld deeply and the cream sets perfectly.
Practical kitchen tips for the best results:
- Whipping egg yolks over steam: Heating egg yolks with sugar over a water bath safely creates a thick and stable base for the cream without using starch or pudding powder.
- Trick for a glossy glaze: Adding a bit of oil and butter to the melted chocolate ensures the glaze won’t crack in the fridge and can be easily cut with a sharp knife.
- Letting it rest overnight: Allow the slices to rest in the fridge until the next day—the nut sponge will become tender and the chocolate cream with peanuts will reach the perfect consistency.
