Flourless Nutella Chocolate Torte Recipe

Name: Flourless Nutella Chocolate Torte Recipe
Ingredients: For the Torte:; 3/4 cup skinned hazelnuts, lightly toasted; 9 ounces bittersweet chocolate, finely chopped; 9 ounces milk chocolate, finely chopped; 3 tablespoons unsalted butter, plus more for greasing pan; 1 1/4 cups Nutella; 6 large eggs; 1/3 cup granulated sugar; 1/8 teaspoon salt; 1/4 cup heavy cream, cold; For the Garnish:; 2 ounces bittersweet chocolate, finely chopped; 16 whole skinned hazelnuts; 1/4 cup heavy cream; Cocoa for dusting cake