Nutella, sweetened condensed milk, and heavy whipping cream.
Whip the cream until stiff peaks are formed.
Slowly add in the sweetened condensed milk.
It should look like this (a softer consistency).
Begin to add the Nutella to the batter.
Pour it into a freezer safe container. Swirl in additional Nutella.
Freeze for 8 hours.
Drizzle more Nutella on top and add whipped cream if desired.