Step 1

Melt the chocolate over medium heat in a small saucepan.

Step 2

Mix in the hot chocolate mix and sugar.

Step 3

Remove from heat and slowly whisk in the milk.

Step 4

Let cool to room temperature.

Step 5

Add the ice, remaining milk, and the chocolate mixture to a blender. Blend until smooth.

Step 6

Pour into a large sundae glass, top with whipped cream and chocolate shavings.