1½ cups of biscuit/cookie crumbs (I used chocolate covered digestives as that's what I had .)
2 tablespoons melted butter
Mix the biscuit/cookie crumbs and the melted butter. Mix well and press firmly into a lightly greased 8-inch spring form pan and place into the refrigerator.
instructions for the filling:
Put the double cream and sugar into a sauce pan over medium heat and bring to the boil.
Remove the pan from the heat and add the butter and chocolate chunks and stir until the chocolate has melted. (you may need to sample the mixture too see if you need to add any more sugar to you taste. or that's the excuse you will need to use)
Let the mixture cool slightly before adding the milk and mixing until smooth.
Pour the mixture over the biscuit/cookie base. Let cool at room temperature for 30 minute before chilling for an hour in the refrigerator.