In a saucepan, combine the pumpkin purée, brown sugar, water, vanilla and pumpkin spice.
Cook over medium-low heat for 10–15 minutes, stirring occasionally, until everything is well combined and the mixture has slightly thickened.
Remove from the heat and allow the pumpkin syrup to cool completely.
If you’re making the syrup ahead of time, transfer it to a clean container, cover, and refrigerate.
To make your latte, add 2 tablespoons of pumpkin syrup to a cup.
Add the espresso or hot, strong coffee, followed by the hot milk. Stir well.
Top with whipped cream, if desired, and finish with a dash of pumpkin spice.
Enjoy your homemade pumpkin spice latte!