Nutella & Walnut Biscuit Cake with Dark Chocolate Whipped Cream – Page 2

Begin by breaking the biscuits into small, bite-sized pieces. You can use a food processor or crush them by hand in a ziplock bag. Set them aside.
In a small bowl, dissolve the instant coffee and 5 g of sugar in 100 ml of warm water. Stir until the sugar dissolves completely.
In a large mixing bowl, pour the coffee mixture and add the milk (500 ml) and melted butter (60 g). Stir well to combine.
Slowly add the broken biscuits to the wet mixture and stir to coat the biscuits evenly. Let this mixture soak for about 10-15 minutes to ensure the biscuits absorb the liquid.

While the biscuits are soaking, toast the walnuts in a dry skillet over medium heat for 3-5 minutes or until they become fragrant. Remove from heat and roughly chop them.
In a separate bowl, mix the Nutella (200 g), vanilla sugar (10 g), and the chopped walnuts (100 g). Stir until the mixture is smooth and the walnuts are evenly distributed.

Once the biscuit mixture has absorbed enough of the liquid, start assembling the cake. Take a rectangular or round cake pan (approximately 9×9 inches) and layer the biscuit mixture at the bottom.
Spread half of the Nutella-walnut mixture over the biscuit layer, pressing it gently to make sure it sticks.

Place the dark chocolate (300 g) in a heatproof bowl and melt it gently using a double boiler or microwave. Be careful not to burn the chocolate.
In a small bowl, dissolve the gelatine (10 g) in 20 ml of warm water. Allow it to bloom for a few minutes.
In a large bowl, whip the whipping cream (150 ml) to soft peaks. Once the cream starts to thicken, slowly add the melted dark chocolate and the dissolved gelatine mixture.
Continue whipping the cream until stiff peaks form, and the mixture is thick and smooth.

Spread the dark chocolate whipped cream over the Nutella-walnut layer, creating a smooth, even layer on top.
Cover the cake with plastic wrap and refrigerate for at least 4 hours, or overnight if possible. This will allow the flavors to meld together and for the cake to set perfectly.