Whisk together Nutella, coffee, and sugar (if using) until melted.
1 big heaped tbsp Nutella, ¼ cup Espresso / instant coffee, Sugar/Sweetener*
In a separate glass, fill it with ice then pour in the milk.
1 cup Milk, Ice
Add the Nutella-coffee mixture and top with whipped cream if you like. Stir and enjoy!
Whipped Cream
Notes
My personal preference is no need to add any sugar or sweetener but if you prefer your latte to taste sweeter, stir your sugar/sweetener into the hot coffee together with the Nutella in step 1. The amount to add is completely up to your personal taste!
Make sure you have blended the Nutella with the hot coffee first before adding it to the ice & milk. This is because the Nutella would firm up when in contact with the ice and cold milk and not mix well together. You will not have this problem if you blend it with the coffee first.
Want to recreate those Nutella patterns on my glass? Simply scoop a spoon of Nutella and just randomly dot them around the inside of the glass before you start making the drink!