Ingredients

  • Nonstick cooking spray
  • 1/2 cup plus 1 tablespoon (2 1/4 ounces) white rice flour
  • 1/2 cup (3.5 ounces) granulated sugar
  • 2 tablespoons cocoa powder
  • 1/4 teaspoon baking soda
  • 1/4 teaspoon table salt
  • 2 large eggs
  • 2 tablespoons vegetable oil
  • 1 teaspoon vanilla extract
  • 1/2 cup toppings, such as chocolate chips, chopped nuts, toffee pieces, and/or other candy

Method

  • Preheat oven to 350°F. Line an 18- by 13-inch rimmed baking sheet with parchment paper. Spray parchment lightly with nonstick cooking spray.
  • In a medium bowl, whisk together white rice flour, granulated sugar, cocoa powder, baking soda, and salt. Add eggs, oil, and vanilla. Whisk until a smooth, thick batter forms. Spread batter out onto prepared baking sheet into an approximately 17- by 13-inch rectangle. Sprinkle topping evenly over batter.
  • Bake until set, about 16 minutes. Immediately cut into bite-size pieces with a pizza cutter or large knife, then allow to cool on the baking sheet. Store in a covered plastic container for up to 4 days.