Shape a slightly rounded tablespoon of the filling into a 9-inch-long rope and place it down the center of one strip. Roll up the strip lengthwise. Brush edge and ends with water; pinch to seal. Place, seam side down, on an ungreased baking sheet, shaping strip into a letter (traditionally the letter "S"). Brush with water and sprinkle with additional granulated sugar. Repeat with remaining dough strips and filling. Repeat with remaining dough portions and filling.