05Place balls 2" apart. Press thumb into center of each ball to make indentation.06Bake 8 to 10 minutes or until golden brown.07Remove to cooling racks and cool completely, about 30 minutes.08In 1 qt saucepan, heat all filling ingredients over low heat about 25 minutes, stirring constantly, until smooth and thickened.09Cool about 15 minutes.10Fill each thumbprint with rounded 1/4 tsp filling. Sprinkle 1 T powdered sugar over cookies.