Gluten-Free Sugar Cookies | From Scratch | Alton Brown

Ingredients

• 1 3/4 cups plus 1 1/2 teaspoons brown rice flour
• 1 1/2 cups plus 2 tablespoons white rice flour
• 1 cup plus 1 tablespoon cornstarch
• 1 1/4 cups plus 2 teaspoons tapioca flour or starch
• 1/2 cup plus 1 tablespoon plus 1/2 teaspoon potato starch
• 1 cup nonfat dry milk powder
• 1 tablespoon plus 1/2 teaspoon xantham gum
• 3 1/2 cups Gluten-Free Flour Mix (above)
• 1/2 teaspoon baking powder
• 1/2 teaspoon kosher salt
• 1 cup plus 1 tablespoon plus 2 teaspoons granulated sugar
• 16 tablespoons (2 sticks) unsalted butter, softened to 67°F
• 1 large egg
• 1/2 teaspoon vanilla extract
• 1/4 teaspoon almond extract
• Confectioners' sugar, for rolling
• Royal Icing, for decorating