Get out your ingredients and measure them.
Preheat oven to 350 degrees.
Spray and line a 9 x 13 inch pan with non stick spray and parchment paper. Make sure to spray both the pan and the inside of the parchment paper. Set aside.
In a medium sized bowl, combine flour, cocoa powder, sugar, baking soda, baking powder, and salt. Set aside.
Beat together milk, eggs, and oil in a large bowl,
Gradually beat in dry mixture and then the water.
Pour batter into prepared baking dish,
Bake for 35-40 minutes or until a toothpick comes out clean.
Once fully cooked, let cool completely.
Once cooled, take the end of a wide wooden spoon (or anything similar) and poke rows of holes into your cake.
**If your cake is domed, cut off parts of the top until it is level.
Whisk together pudding powder and milk for 5 minutes until it thickens.
Pour over the top of your cake in the holes, and spread a layer all over the top. Refrigerate.
Beat together whipping cream, sugar, and green coloring for 5 minutes until you have stiff peaks, and spread over your pudding.
Sprinkle on mini chocolate chips.
Cover with plastic wrap and refrigerate overnight, and cut to serve.