Eggnog Sandwich Cookies Recipe

Ingredients

• 2 cups confectioners' sugar
• 16 tablespoons unsalted butter
• 2 tablespoons light corn syrup
• 2 teaspoons ground cinnamon
• 1 teaspoon freshly grated nutmeg
• 1 teaspoon vanilla extract
• 3/4 teaspoon salt
• 1/4 teaspoon ground cloves
• 1 large egg
• 3 tablespoons rum
• 2 teaspoons baking powder
• 3 1/2 cups all purpose flour plus more for dusting
• sanding sugar
• 3 cups confectioners' sugar
• 1/4 cup rum
• 1/4 cup heavy cream plus more for thinning