Combine all of the ingredients in a cocktail mixing glass filled with ice and stir well.
For a festive rim, start by preparing two shallow dishes with a thin layer of dark chocolate sauce on one and sprinkles on the other. Dip the tops of each serving glass into the dark chocolate sauce and then press into sprinkles.
Fill the glasses with ice then strain in the spiked mocha latte. Enjoy solo or with your sweetheart!