01 - Halve the peaches and carefully remove the pits. With a spoon, scoop out about 1 tablespoon of flesh from each half to create a cavity. Reserve the scooped peach flesh.
02 - Combine the reserved peach flesh, Greek yogurt, honey, and cinnamon in a blender or food processor. Blend until completely smooth and creamy.
03 - Chill the blended mixture in the refrigerator for 30 minutes. Transfer to an ice cream maker and churn for 20 to 25 minutes until thick and creamy. Alternatively, freeze in a shallow dish and stir every 30 to 45 minutes for 2 to 3 hours until smooth.
04 - Spoon the churned sorbet into each peach shell, smoothing the surface. Place the filled peach halves on a freezer-safe tray or dish and freeze for 2 to 3 hours until firm.
05 - Before serving, garnish with chopped pistachios, a drizzle of honey, or fresh mint leaves as desired.