Pour the Homemade Honey Cinnamon Vanilla Syrup into a cocktail shaker.
Brew two shots of espresso and pour them into the shaker.
Add a generous amount of ice, secure the lid, and shake vigorously until chilled and frothy.
Pour the espresso and ice mixture into a drinking glass, and top with oat milk (or your milk of choice).
Stir to combine, and enjoy.