In a stand mixer, whip your heavy cream on medium speed for about 5 minutes until it forms stiff peaks. It should be a creamy, thick texture. Next, add in your Nutella, chocolate fudge icing, and salt, and mix until it is thoroughly combined.
Dish the mousse into small bowls. Top it with fresh berries, an extra pinch of salt, or keep it plain.
Serve immediately, or place the mousse in the refrigerator for an hour to chill. Enjoy!