ice cubes (optional)
1 1/2 fluid ounces half-and-half
1 fluid ounce spiced rum (such as Captain Morgan’s®)
1/2 fluid ounce butterscotch schnapps
1/2 fluid ounce coffee-flavored liqueur (such as Kahlua®)
1/2 fluid ounce pumpkin pie-flavored syrup (such as Monin®)
1 teaspoon cinnamon sugar, or as needed
2 tablespoons whipped cream, or to taste
1 pinch ground nutmeg
Fill a cocktail shaker with ice; add half-and-half, spiced rum, butterscotch schnapps, coffee-flavored liqueur, and pumpkin pie-flavored syrup. Cover and shake until the outside of shaker has frosted.
Coat the rim of a martini glass with cinnamon sugar. Strain half-and-half mixture into the glass. Garnish with whipped cream and nutmeg.