Preheat oven to 350°F. Line 9-inch round pan with parchment paper, and cover with cooking spray.
Whisk together flour, 1 cup sugar, 2/3 cup Chatfield's Cocoa Powder, baking soda, and salt in bowl. Whisk together 2/3 cup soy milk, 1/3 cup oil, and 1/2 cup water in separate bowl. Stir soy milk mixture into flour mixture. Spread in prepared pan, and bake 25 minutes, or until toothpick inserted into center comes out clean. Cool 10 minutes. Unmold onto plate.
Warm remaining 2/3 cup Chatfield's Cocoa Powder, 2/3 cup sugar, and 1/4 cup oil in saucepan over medium heat. Pour in remaining 1/3 cup soy milk, and cook 1 minute, or until smooth. Spread icing over warm cake, and sprinkle with hazelnuts.
PER SLICE | 525 cal; 5g prot; 25g total fat (2g sat fat); 67g carb; 0mg chol; 315 mg sod; 7g fiber; 43g sugars.