Mix brownie mix according to directions and bake in 9x13 inch greased and floured pan.
Mix cream cheese, powdered sugar and 1 container whipped topping. Spread cream cheese mixture on top of the cooled brownies.
Blend puddings and milk together and carefully spread on top of the cream cheese mixture.
Top with second container of whipped topping. Put chocolate shavings and chocolate syrup on top.
Refrigerate until ready to serve (we also like to throw this in the freezer for a yummy summer dessert and it is sometimes easier to cut and serve when it's been in the freezer).
Notes
Place the candy bar in the freezer at the beginning of your recipe prep, and by the time you make the chocolate curls it will be frozen for the perfect curls. It melts quickly in your warm hand.