For the sponge cake, beat the egg with the hot water for about 1 minute until frothy, then add sugar and vanilla sugar. Beat through for another 2 minutes. Mix flour with cornstarch and baking powder and stir in. Pour the dough into a prepared mold.
Bake in the preheated oven at 160 ° C on the middle rack for about 20-30 minutes until golden yellow.
For the meringue crumbs (easy to prepare), stir the egg whites until frothy, gradually add 200 g of sugar. Mix the other 200 g sugar with the 60 g hazelnuts and pudding powder and fold in. Spread the mixture on a baking sheet lined with baking paper.
Bake in the preheated oven at 140 ° C for approx. 1 hour or leave to dry.
For the brittle (is also easy to prepare), melt 50 g of chopped almonds with 50 g of sugar and 1 tablespoon of butter in a pan. Stir while cooling, otherwise you will have a single brittle chunk.
Tip: You can of course also use brittle that has been bought. But it doesn`t taste that good.
After baking, grate the finished cold meringue base into crumbs with a food processor (or other grater).
For the filling, whip the cream and mix with 100 g of sugar.
Layer the cake in a size 30 loaf pan lined with foil (it is best to use a cut freezer bag): Below the cooled sponge cake base - one layer only cream - chocolate shavings - mixed cream and meringue crumbs (about 5 tablespoon cream and 10 tablespoon meringue crumbs) - one thin layer only cream - meringue crumbs - 7 tablespoons of cream mixed with 6 tablespoons of meringue crumbs and 2 tablespoons of brittle - only cream as the top layer. Sprinkle the cake with chocolate chips and brittle on top
Freeze the cake for at least 3 - 4 hours. Take out of the freezer approx. 15 minutes before serving.
Tip: If there are any meringue crumbs left - these are durable and can be used, for example, as an accompaniment to vanilla ice cream.
The Boss Kitchen editorial staff oversees content review, fact-checking, and recipe verification across the site. Published articles pass through the editorial team before going live, ensuring ingredient lists, techniques, cooking times, and nutritional claims hold up in a home kitchen. The team coordinates contributions across the site writers, handles reader corrections, and maintains consistency in measurement conventions, safety guidance, and dietary labeling. Posts under this byline typically represent team-reviewed reference material, site announcements, or editorial roundups rather than individual-author features, and they are held to the same sourcing standards as bylined recipe and product coverage.