Pre-heat oven 400-f
Beat Butter, Cream cheese, milk and sugar in medium-size bowl with electric mixer until thoroughly blended. Beat in egg yolk. Sift flour and baking powder and stir into butter mixture to make stiff dough. Cover bowl and refrigerate 7 hours or over-night.
Roll out dough on lightly floured surface to ¼ thickness, Cut Dough with 2” cookie cutter. Place cookies on ungreased baking sheets about 1” apart. Make depression in center with Thumb or back of spoon. Spoon 1 Teaspoon Solo filling into center of cookie. Bake 10-12 minutes or until lightly browned. Remove from baking sheets and cool completely on wire racks. Sprinkle with confectioners’ sugar just before serving
Originally Submitted 1/10/2010