Your friends and family will love you more after you make this- if that is possible!
Place Mascarpone, vanilla ice cream and milk in blender container. Blend until smooth and creamy. Pour mixture into bowl or pitcher; set aside.
Place chocolate ice cream and espresso in blender container. Blend until smooth. Divide chocolate mixture evenly among 4 glasses. Top chocolate mixture with Mascarpone mixture.
In small bowl, combine cocoa powder and confectioners sugar. Sift mixture evenly over each glass and garnish with a biscotti. Serve immediately.