Heat a medium saucepan with 2-3 inches water over medium high heat. Place a glass bowl on top of saucepan and add chocolate, heavy cream, and vanilla extract.
While the water simmers, stir ingredients together as they melt. The key is to melt the chocolate slowly.
Pulse espresso malt balls in food processor until you're left with small crumbles. Pour out crumbs onto a flat surface.
Pour chocolate sauce onto a plate or flat surface and dip the rim of your martini glass into sauce. Then dip martini glass into malt ball crumbs.
Into a cocktail shaker, add ice, Godiva liqueur, vodka, and espresso. Shake vigorously for 10 seconds and pour into chocolate-rimmed glasses to serve!