Rim a coupe glass with cinnamon sugar by dipping the rim in lime juice and then in the cinnamon sugar.

In a shaker, combine vodka, apple cider, orange liqueur, grenadine, and lime juice with ice.

Shake well until chilled.

Strain the mixture into the prepared coupe glass.

Garnish with an apple slice if desired.

Beware of this wickedly delightful cocktail—it’s dangerously delicious!