In large bowl combine butter, sour cream, lemon zest and 1 cup flour. Beat until
well mixed. By hand, stir in remaining flour until well mixed.
Roll out dough, 1/2 at a time, on a well floured surface to 1/8-inch thickness.
With sharp knife cut into 3 x 3-inch squares. Place squares on cookie sheets. Place
1 teaspoon raspberry preserves in center of each square. Bring together 4 corners
of each square and pinch together.
Bake for 11 to 14 minutes or until lightly browned.
Cool completely; sprinkle with confectioners' sugar.