Kinder cake, without baking! For 3 years I’ve been preparing it for all my holidays

Kinder cake, without baking! For 3 years I’ve been preparing it for all my holidays Ingredients: for the cake top: sponge fingers - 370 g (13 oz) milk - 300 ml ( fl oz) for the cream: mascarpone - 700 g ( oz) cream - 400 ml (13.5 fl oz) powdered sugar - 150 g (5.3 oz) Kinder chocolate - 25 pieces In the microwave oven for 5 min In the fridge for 2 h