Preheat a grill or grill pan to medium-high heat. Brush the peaches with the melted coconut oil liberally, allowing any excess coconut oil to fall over the grill.
Place the peaches cut side down first on the grill or grill pan, working in batches if needed. Grill for 5 minutes and then flip them over and grill until tender, but still firm, about 3 more minutes.
Whisk together the light brown sugar and cinnamon, and sprinkle on top of the peaches as soon as you remove them from the grill.
Serve the peaches with vanilla ice cream and granola, and garnish with fresh mint leaves, if desired.
Notes
Storage: Grilled peaches will keep well in the fridge for 3 to 4 days.* Please note the nutrition label does not include the ice cream and granola.