Step #2 Spray 13x9 in cake pan with non-stick cooking spray.
Step #3 Sift together dry ingredients onto a large sheet of tin foil wrap.
Step #4 In a large bowl, milk , add peanut butter, eggs, & vanilla Mix on medium speed until mixed.
Step #5 Gradually add flour mixture to the peanut butter mixture & mix at medium speed until both mixtures are thoroughly mixd, about 2 to 3 mins.
Step #6 Add chocolate chips & mix by hand.
Step #7 Pour into pan.
Step #8 Bake 35 to 40 mins or until toothpick inserted in the middle comes out clean.
Step #9 Set on wire rack to cool.
Step #10 Using the handle of a large wooden spoon, poke 25-30 "pudding holes" into cake.
Step #11 While cake continues to cool, start on topping.
Step #12 For topping, heat 2 c skim milk over med-heat/flame until just hot, about 10 mins-DO NOT ALLOW TO BOIL.
Step #13 Add pudding mix to milk & stir constantly with a wire wisk until pudding begins to boil.
Step #14 Remove from heat & let sit for 5 mins, stirring twice.
Step #15 Very slowly & slowly pour pudding over the cake making sure that pudding sinks into the "pudding holes.
Step #16 ".
Step #17 To prevent "skin" from forming on top of the pudding, as soon as possible put plastic wrap over cake, placing it directly on the pudding (it will peel off fine without disturbing the pudding later).
Step #18 Chill one hr before serving.
Step #19 *Note-For thicker topping, use two 1.
Step #20 3 oz boxes of pudding & 4 c of skim milk.
Step #21 Follow same instructions for preparing topping above.