Weight Watchers Sugar Cookies

Bahan-bahan (14 porsi)

• 1½ cups all purpose flour
• ½ teaspoon baking powder
• ½ teaspoon ground nutmeg
• ¼ teaspoon salt
• ⅔ cup granulated white sugar
• ¼ cup (½ stick) salted butter, (at room temperature)
• 1 large egg white
• ¾ teaspoon vanilla extract
• ¼ cup reduced-fat sour cream
• ½ cup powdered sugar
• 1 tablespoon water
• ½ teaspoon vanilla extract
• food coloring, (optional)