1 ounce black candy melts
2 cups heavy cream
1 tablespoon sugar
1/2 teaspoon pure vanilla extract
2 heaping cups ice cubes
1/2 cup vanilla vodka
Two 1.4 ounce packets white hot-chocolate mix
Microwave the candy melts in a small microwave-safe bowl at 50-percent power in 10 second increments, stirring in between, until melted, 40 to 60 seconds. Stir until smooth.
Lay a stemless wine glass on its side. Use a small spoon to paint 2 large ghost eyes and 1 large mouth with the candy melt inside the glass. Repeat with the remaining glass(es). Chill the glasses, painted-sides down, in the freezer until the candy melts harden and the glasses begin to frost, about 10 minutes.
Meanwhile, whisk 1 cup of the cream in a large bowl, either by hand or with a handheld mixer, until foamy. Whisk, gradually adding the sugar, until soft peaks form. Whisk in the vanilla extract. Transfer to a piping bag fitted with a large plain tip.
Combine the ice, vodka, hot chocolate mix and remaining 1 cup cream in a blender and blend on high speed until very smooth and thick. Pour into the prepared glasses. Pipe the whipped cream on top of each drink, swirling to make a peak at the top of the ghost’s head. Serve immediately.