ARRANGE 13 chocolate wafer cookies in bottom of 8-inch square pan.

PREPARE 1 pkg (4-serving size) Jell-O Vanilla Instant Pudding Mix with 1 cup milk as directed on package. Fold in 1 cup thawed Cool Whip Topping.

POUR half the pudding mixture over cookies. Layer with 13 additional wafers and remaining pudding mixture. Top with 2 peeled oranges, thinly sliced.

THIN 1/4 cup Kraft Orange Marmalade with a little water; spoon over oranges. Chill about 3 hrs.