6 ripe peaches, halved, pit removed
1 stick (8 tablespoons) unsalted cold butter, melted, plus more if needed, divided
8 tablespoons light brown sugar, divided
1 teaspoon ground cinnamon, divided
1/2 cup granola
1 pint vanilla ice cream
1/2 cup prepared caramel sauce, heated

Heat the grill to medium.

Place the peaches cut side down on the grill until browned.
Remove from the grill, cut into wedges and place into a gratin dish.