Sugar Cookie Bars with Spiced Buttercream Frosting

Ingredients

• 2¾ cups all-purpose flour
• ¼ teaspoon baking soda
• ¼ teaspoon fine salt
• 1 cup (2 sticks) Challenge Unsalted Butter, softened
• ¾ cup sugar
• 1 large egg
• 1 teaspoon vanilla extract
• ¼ teaspoon almond extract
• 1½ cups (3 sticks) Challenge Butter, cubed and softened
• 6 cups powdered sugar, sifted
• ½ teaspoon ground cinnamon
• ¼ teaspoon ground nutmeg
• ¼ teaspoon ground cloves
• 1 teaspoon boiling water