HEAT oven to 350ºF. Prepare cake batter as directed on package; pour into greased and floured 2-qt. ovenproof glass bowl. Bake 1 hour or until toothpick inserted in center comes out clean. Cool cake in bowl 15 min.; invert onto wire rack. Cool completely.

BEAT pudding mix and milk in large bowl with whisk 2 min. Add peanut butter; beat until well blended. Stir in COOL WHIP. Cut cake horizontally in half; place flat layer on plate. Frost with half the pudding mixture; cover with remaining cake half, rounded-side up. Spoon remaining pudding mixture into resealable plastic bag; refrigerate with cake until ready to use.

BRING cream just to boil in small saucepan on low heat. Add chocolate; cook until melted, stirring constantly. Cool 10 min. Meanwhile, dip edges of wafers in glaze; place on plate. Let stand until glaze is firm. Spread remaining glaze onto cake.

MAKE 2 small cuts in top of cake; insert wafers in cuts for the monkey's ears. Refrigerate 30 min.

CUT corner off 1 bottom corner of bag of pudding mixture; use to pipe pudding mixture onto cake for the monkey's mouth and into mound on top of head as shown in photo. Cut 6-inch length from licorice; place on cake for mouth. Cut remaining licorice piece in half; add to cake for the nostrils. Split OREO Cookies in half; place creme-covered halves on cake for the eyes. Discard remaining OREO halves or reserve for snacking. Keep cake refrigerated.