Stir boiling water into gelatin in large bowl at least 3 minutes until completely dissolved. Cool 30 minutes are room temperature.
Pour milk into medium bowl. Add pudding mix. Beat with wire whisk 1 minute. Quickly stir into gelatin with wire whisk until blended. Pour into 9 x 13 pan.
Refrigerate at least 3 hours or until firm.
Dip bottom of square pan into warm water about 15 seconds. Cut into decorative shapes with cookie cutters all the way through gelatin. lift from pan.