Thin out the Nutella a little, either by placing in a bowl over a pot of boiling water or microwave.
In a cold bowl with cold beaters (I place mine in the freezer for about 15-20 minutes).Whip cream until stiff (be careful not to make butter).
Add a little whipped cream to the sweetened condensed milk mixture to make it easier to combine, then fold in the rest of the whipped cream mixture.
Fold in chocolate chips, pour into a loaf pan 8x4 inch (20x10 centimeters). Pour thinned out cooled Nutella on top and with the tip of a knife mix it into cream mixture. Cover with plastic wrap and freeze until firm or over night. Enjoy!