Fill your cocktail shaker with ice.
Add 2 oz bourbon, 3 oz apple cider, ½ oz vanilla syrup (or ¼ tsp vanilla extract), and ½ oz lemon juice.
Shake it up for about 15 seconds, until it feels cold and mixed.
Strain into a rocks glass over fresh ice.
If you have an apple slice or cinnamon stick handy, toss one in for garnish.
