Prepare and bake the chocolate cake mix according to the package instructions for cupcakes. Let cool completely.
Frost the cupcakes with the vanilla frosting. Top one cupcake with about 1 tablespoon chocolate sauce (it is best to do one cupcake at a time). Working quickly, before the sauce hardens, top with some sugar cone and salted peanuts. Repeat with the remaining cupcakes. Serve with vanilla ice cream on the side, if desired.