Prepare vanilla cream with 300 ml milk according to the instructions on the packet. Pour the cream into a large bowl, cover directly with foil and leave to stand at room temperature for approx. 30 minutes (tempering)
Crumble the biscuits, sieve the icing sugar. Whisk butter and icing sugar with the whisk of the hand mixer for about 5 minutes until white-creamy. Stir in vanilla cream and biscuits with a whisk (butter and cream should be at the same temperature. E.g. serve with sponge cake
Waiting time approx. 30 minutes