In a blender, add 2 tablespoons of Nutella, 200 ml of chilled milk, 1 tablespoon of instant coffee powder, and 2 teaspoons of sugar. Blend it until it becomes frothy.
Add a handful of ice cubes to the blender and blend again for a few seconds.
Pour the cold coffee into a tall glass.
Top it with a generous amount of whipped cream and drizzle some Nutella on top for garnish.
Serve the Nutella Cold Coffee immediately.