In a medium bowl, add the ingredients of the brownies mixture and prepare them according to the instructions on the package. Add the brownies mixture in a rectangular tray lined with parchment paper and put it in an oven preheated at 180 degrees for 22 minutes
Take out the brownies tray from the oven and let it cool completely, then cut it into small squares
In a blender add 3 Oreo Ice Cream Cones and milk and mix until the consistency is smooth to create the Oreo shake
Choose a suitable cup for serving and dip it in the melted chocolate and then the sprinkles, add a brownie piece in the cup, then a bowl of Oreo Ice Cream, then Oreo shake, then add some brownie pieces, hazelnuts, then two scoops of Oreo ice cream, Oreo cookies and chocolate sauce, and the layers can be repeated as desired. At the end, top it off with a delicious Oreo Ice Cream Cone.