Prepare the espresso (or strong coffee) and set aside.
1/4 cup hot espresso
In a small saucepan, add the milk, pumpkin purée, pumpkin pie spice and sugar.
3/4 cup milk, 1 tablespoon pure pumpkin purée, 1/4 teaspoon pumpkin pie spice, 1 tablespoon sugar
Heat over medium heat until hot, whisking frequently. Do not let it come to a boil. Remove from heat.
Pour the freshly brewed espresso or strong coffee into a mug. Add the vanilla.
1 teaspoon vanilla extract
Add the pumpkin-milk mixture and stir to combine.
Spoon the marshmallow fluff on top. Toast the marshmallow fluff lightly with a kitchen torch.
1/4 cup marshmallow fluff
Sprinkle with a little more pumpkin pie spice. Serve immediately!
If using a drip coffee maker to brew strong coffee: you can add 1 tsp. pumpkin pie spice to the coffee filter along with the coffee grind before brewing, for extra flavor. (Do not add spices to the grind if using an espresso machine.)
You can add more pumpkin spice and/or pumpkin purée to the mixture if you like, but the purée starts to thicken the texture of the drink and that can be unpleasant to some.