Pour the heavy cream into a mixing bowl. Beat on medium speed to medium peaks with a whisk attachment (or beaters).
In a separate bowl melt ½ cup (148 g) Nutella in the microwave in 30 second increments for 30 - 60 seconds. The chocolate hazelnut spread should become runny.
Whisk the sweetened condensed milk, vanilla extract and salt into the melted Nutella until well combined.
Pour the sweetened mixture into the whipped heavy cream and mix on low until combined.
Layer the homemade ice cream with ¼ cup (74 g) of more melted Nutella into a freezer proof container. I like to do two layers of homemade ice cream topped with a swirl of melted Nutella.
Transfer the ice cream to the freezer to set for 1-2 hours. Then cover the entire container in plastic wrap and a layer of foil. Freeze the ice cream for at least 8 hours, but preferably overnight.
Pull the ice cream out to sit at room temperature for about 5 minutes, scoop and enjoy!