Mix the cream, cream cheese, and sugar until smooth.

Add a little milk to the mixture to make it slightly thinner so it can be easily spread over the biscuits.

Add pistachio butter to the mixture as desired and mix well.

Dip the ladyfingers briefly in milk and arrange them in a dish.

Spread a layer of the cream mixture over the biscuits.

Sprinkle ground pistachios over the cream layer.

Repeat these steps in layers.

Finally, cover the top of the tiramisu completely with ground pistachios.