Eggnog Thumbprint Cookies - Fitness Food Diva

Ingredients

• 3/4- cup butter, softened
• 1/2- cup sugar
• 1/8- teaspoon ground nutmeg
• 2-egg yolks
• 1-teaspoon vanilla
• 1 1/2-cups all-purpose flour
• 2-egg whites, lightly beaten
• 1 1/2-cups finely chopped walnuts
• 1-recipe Rum Filling
• Grated whole nutmeg or ground nutmeg (optional)
• 1/4-cup butter, softened
• 1-cup powdered sugar
• 1-teaspoon rum or 1/4 teaspoon rum extract
• 1-teaspoons nonfat milk( or milk of choice)