1. Heat oven to 350°F.
2. Stir together sugar and cocoa in medium bowl. Add eggs, corn syrup, butter and vanilla; stir until well blended. Stir in pecans. Pour into unbaked pie crust.
3. Bake 60 minutes or until set. Remove from oven to wire rack. Cool completely. Garnish with whipped topping. 8 servings.