Gluten-Free Holiday Butter Cookies Recipe | King Arthur Baking

Ingredients

• 1 1/4 cups (142g) confectioners' sugar
• 18 tablespoons (255g) salted butter, room temperature*
• 1 large egg yolk, white reserved for topping if desired (see "tips," below)
• 1/2 teaspoon table salt
• 1/4 teaspoon King Arthur Fiori di Sicilia, or flavor of your choice (see "tips," below)
• 2 3/4 cups (330g) King Arthur Gluten-Free Measure for Measure Flour
• 2 1/4 cups (283g) confectioners' sugar
• 2 tablespoons (35g) light corn syrup
• 1 1/2 tablespoons to 2 tablespoons plus 1 teaspoon milk, enough to make a pourable/spreadable icing
• natural food coloring, optional
• 1 cup coarse sparkling sugar, or colored sugar, for decorating, optional