Roughly crumble the butter biscuits and set aside 70 g for sprinkling. Wash and clean the strawberries. Puree 100 g strawberries, then strain them through a fine sieve and set aside.
Put the remaining 300 g strawberries with milk, cream cheese, vanilla ice cream and the remaining 30 g shortbread crumbs in a blender and mix into a creamy shake.
Use a spoon to pour the strawberry puree over the inside into 4 glasses and fill up with the shake. Sprinkle each with the butter biscuit crumbs that were set aside.