Line the base of a springform pan with parchment paper and set aside
Place the biscuits in a food processor and pulse until it resembles fine breadcrumbs. Mix in the melted butter
Place the breadcrumbs in the springform pan and press down with the back of a measuring cup. You can press some onto the sides of the pan if you wish. Refrigerate until the filling is ready
Whip the fresh cream until stiff peaks form and refrigerate. Ensure your cream is cold when whipping
Melt the chocolate in a bowl, at 30 second increments until completely melted. Mix well and allow to cool down
In a large bowl beat the cream cheese together with the sugar. Mix until it's smooth and creamy. Add the mascarpone cheese and beat well. Mix in the vanilla essence and cocoa, slowly drizzle in the chocolate and mix just until combined. Ensure the chocolate is cool but not hard
Fold in the whipped cream. Pour the filling into the base, cover with clingwrap and refrigerate for 5 hours or overnight
Decorate with fresh berries and a sprinkle of icing sugar when serving. Use a knife dipped in warm water to cut neat slices