Preheat oven to 350 degrees. Prepare a 9 inch springform pan by spraying with non-stick spray and lining the bottom with parchment paper.

Beat the egg whites and salt until it forms stiff peaks. 

Beat Nutella and softened butter in a different bowl until it combines. Add egg yolks, almond flour and mix until combined.  Stir in melted chocolate. 

Gently fold in the beaten egg whites.

Pour the batter into a prepared pan. Bake for bout 45 minutes. When the cake is done, you will see that the cake will separate from the pan.

Remove from oven and unmold. Let cool

Mix the heavy cream, chocolate and butter in a pan on the stove top. Heat over medium heat,until the chocolate melts.

Spread/pour the thickened chocolate mixture over the cake.

Top with raspberries. Let the chocolate set before serving.