Preparation

• Preheat oven to 350°F. Mix sugar and cocoa powder in large bowl. Set aside. Mix cornstarch, sorghum flour, tapioca flour, xanthan gum, baking powder and salt in medium bowl. Set aside.

• Microwave butter in large microwavable bowl on HIGH 2 minutes or until melted. Stir in cocoa mixture until well blended. Add eggs and vanilla; mix well. Gradually stir in flour mixture until well blended. Spread in foil-lined 13x9-inch baking pan sprayed with no stick cooking spray.

• Bake 30 to 35 minutes or until toothpick inserted in center comes out clean. Cool in pan on wire rack. Cut into bars.