Hazelnut Au Chocolat

Directions

1. 1
   Heat oven to 250 degrees F.
2. 2
   Grease and dust bottom only of 9 1/2 inch springform pan with cocoa.
3. 3
   In medium saucepan over low heat, melt chocolate and butter, stirring constantly.
4. 4
   Stir in 23 cup sugar and continue stirring until sugar is dissolved.
5. 5
   In small bowl, beat 5 egg yolks at highest speed for 2 to 3 minutes.
6. 6
   Blend a small amount of chocolate mixture into yolks.
7. 7
   Blend yolk mixture into chocolate and cook over low heat, stirring constantly, until slightly thickened.
8. 8
   Remove from heat; stir in vanilla and ground filberts.
9. 9
   In small bowl, beat 5 egg whites at highest speed until soft peaks form.
10. 10
    Gently fold egg whites into chocolate.
11. 11
    Pour into prepared pan and bake for 2 hrs.