Instructions 

To make the brownies, you will need to line the bottom of three 8 inch cake tins with parchment paper and preheat the oven to 180 degrees Celcius. Then mix the oil, sugar and vanilla extract and next adding the eggs until you have a smooth mixture. Next combine your dry ingredients together separately. The flour cocoa powder and baking powder along with the salt. Add the egg mixture to your dry mixture and mix it well. Pour the batter into the three tins and spread evenly. Bake for 25-30 minutes. Remove brownies from the oven and allow them to cool. Now make the cookie dough. 

Ignore this step if you're using Gookie Dough! To make regular cookie dough, cream butter and sugar together until it is light and fluffy. Mix in peanut butter and the vanilla extract and slowly add in the flour bit by bit. Add milk to alter the thickness to your liking. Stir in the chocolate chips, and now you should have a thick, gooey dough. 

Cake time! Once your brownies are cooled, it's time to assemble this bad boy. Pop half of your chocolate chips into a metal bowl and microwave half of your heavy cream until you bring it to the boil. Remove from the microwave and pour over your chocolate chips. Cover the bowl for 5-7 minutes then whisk the chocolate mixture until smooth. Using the 8-inch tin that was used for the brownies, pop parchment paper in the bottom and up the sides and this will be used to lift the layers out of the pan. 

Place the first brownie into the bottom of the pan and add 3 tablespoons of chocolate ganache on top and spread a thin layer across. This allows the cookie or Gookie Dough to stick to the brownie properly. Now put half of the cookie into the pan and spread evenly on top of the brownie. Remove the layers of cake from the tin and place on a serving dish. Repeat steps just shown with the second brownie and remaining cookie dough. Place the second section of the cake onto the first so you now have a hella large yummy delight. Pop more chocolate ganache on top of the cookie dough and top with remaining brownies. 

(Picture credit: Tefal Blog) 

If you want to make the cake super fancy and appealing to the eye then place the remaining chocolate chips in a metal bowl, microwave the rest of the heavy cream, pour over the chocolate chips and whisk until smooth. Pour on top of the cake and then allow it to chill in the fridge. To make the icing, beat shortening (Stork with butter) and icing sugar together until smooth, add the peanut butter and then water or milk until the desired consistency. Pipe icing onto the edge of the cake and get decorative! 

*Credit to lifeloveandsugar.com*