In a small saucepan, combine milk, pumpkin puree, pumpkin pie spice, vanilla extract, and your desired sweetener; heat over medium heat, stirring constantly, until hot but not boiling.
Pour the hot pumpkin milk mixture into a mug with the brewed espresso, stir to combine, and top with whipped cream and an extra sprinkle of pumpkin pie spice if desired.
Notes
Adjust sweetener and spice to your preference. For a vegan option, use plant-based milk and vegan whipped cream.