For the Quintuple Chocolate Cupcakes
Bake the cupcakes and allow to cool completely in the pan. While the cupcakes are cooling, make the frosting.

Once completely cool, using a fat round tip, pipe a swirl on top of each cupcake. Place the entire tray of cupcakes in the freezer so the frosting will not melt while dipping it.

While the cupcakes are in the freezer, make the chocolate dipping sauce and allow it to come to room temperature.

Pour the chocolate dipping sauce into a small bowl (I used my 1-cup round tupperware bowls). You want it to be just larger in diameter than a cupcake, and fairly deep. Place the sprinkles in another similarly sized bowl.

Dip the cupcakes into the chocolate sauce until all the frosting is covered. Then add an edge of sprinkles by holding the cupcake sideways in the sprinkles and rotating until all sides are covered with sprinkles. Alternatively, you could just dip the whole thing in sprinkles if you want.

Place entire tray of cupcakes back in the freezer for the chocolate to set up.

Now using a fat star tip, pipe a smaller swirl on top of the cupcake. Store in the refrigerator.

For the Chocolate Cupcakes
Line a standard 12-cup muffin tin with paper liners.

In a heatproof bowl, combine chocolate and cocoa powder.

In a saucepan over medium heat, heat the granulated sugar, butter, and water, stirring occasionally, until the butter melts and the sugar dissolves. Pour the butter mixture over the chocolate and whisk until the chocolate melts and the mixture is smooth.

Whisk the milk, egg, extra yolk, and vanilla into the chocolate mixture until combined.

In a bowl, stir the flour, baking powder, baking soda, and salt until blended. Add the flour mixture to the chocolate mixture and whisk until smooth.

Let the batter sit at room temperature for 1 hour or cover and refrigerate for up to 3 days.

Set the oven at 350 degrees.

Divide the batter among the muffin cups. Bake for 30 minutes or until the tops spring back when pressed lightly with a fingertip. Set on a wire rack and leave to cool completely.

For the Chocolate Cream Cheese Frosting
Using a handheld electric beater, cream the cream cheese and butter together thoroughly.

Add the salt, vanilla, and powdered sugar.

Finally, mix in the melted chocolate and blend thoroughly until smooth.

For the Chocolate Dipping Sauce
Place chocolate and heavy cream in a bowl over simmering water. Let chocolate and cream sit for 2-3 minutes to melt without stirring. Slowly stir mixture to combine.

Add powdered sugar and mix to combine. Add water 1 tablespoon at a time, mixing after each addition until pouring consistency is reached. Set aside and let sauce cool to warm.