PREPARE cake batter and bake as directed on package for 2 (8- or 9-inch) round cake layers. Cool in pans 10 min. Remove to wire racks; cool completely.
BEAT pudding mixes and milk with whisk 2 min. Stack cakes on plate, spreading each with half the pudding mixture.
FROST with Cool Whip.
serving size = 1 piece (108 g)