1.Preheat oven to 350 degrees. Spray or grease an 8 inch square pan, (I used glass) set aside.
2.Prepared pudding mix with 1 1/2 cups milk. Using a large mixing bowl, add prepared pudding into dry cake mix along with the 3 tablespoons milk and vanilla extract. Stir with a wooden spoon or heavy rubber spatula until all is combined. You can use a hand held mixter too. Make sure you dig deep to incorporate all the dry mix. Batter will be very thick. Spread evenly into prepared pan and scatter chips over top.
3.Bake for about 25 minutes. Try not to over bake. Wooden skewer or toothpick should come out with moist crumbs. Let cool on a wire rack.
4.Sprinkle with powdered sugar. Slice into 9 or 12 squares. Enjoy!