Step 1.
- Muddle the apple slices and mint leaves in a shaker to release their flavors.
Step 2.
- Add bourbon, lemon juice, and simple syrup to the shaker with ice.
Step 3.
- Shake well until chilled.
Step 4.
- Strain into a rocks glass filled with ice.
Step 5.
- Garnish with an apple slice and a mint sprig.