• Preheat your oven to 350 degrees.
• Prepare your cake mix and bake according to box instructions in a 9x13 pan.
• Allow cake to cool for about 5 minutes. 
• Poke the cake all over with the bottom of a wooden spoon. (Or a fork, or knife or whatever you have) 
• Mix together hot fudge and sweetened condensed milk in a medium sized bowl. 
• Pour hot fudge sauce over the cake and spread evenly to go in holes and cover the cake. 
• Cover the cake and place it in the fridge to chill for about 2 hours. 

For the Chocolate Whipping Cream:

• Add heavy cream, cocoa powder, powdered sugar and vanilla extract to a large bowl. 
• Beat heavy cream over high speed until stiff peaks form.
• Spread chocolate whipped cream over the top of the cake evenly. 
• Drizzle chocolate sauce over the whipped cream, and sprinkle mini chocolate chips evenly over the top to decorate. 
• Cover cake and place back in the fridge to chill for another 2 hours up to overnight. 
• Slice and serve.