Add the ice-cream, milk and Oreos to a blender then blend until the Oreos are broken down and a thick milkshake forms

In the serving glass slowly drizzle the chocolate syrup or melted chocolate around the sides of the glass then pour the milkshake into the glasses

When ready to serve make the whipped cream by whipping double cream with icing sugar until medium peaks form

Then top the Oreo milkshake with the whipped cream, crushed Oreos and mini-Oreos

Serve immediately and enjoy!