Creating the Grilled Nectarine Sundae is simple when you follow these steps:

1. Preheat the Grill: Heat your grill to medium-high heat.
2. Prepare the Nectarines: Cut the nectarines in half and remove the pits. Brush the cut sides with olive oil.
3. Mix Cinnamon and Sugar: In a small bowl, combine the cinnamon and brown sugar. Sprinkle this mixture generously over the cut sides of the nectarines.
4. Grill the Nectarines: Place the nectarines cut-side down on the grill. Grill for about 5 minutes, or until they have nice grill marks and are slightly softened.
5. Remove from Grill: Carefully remove the nectarines from the grill and let them cool for a minute.
6. Assemble the Sundae: In a serving bowl, place a scoop of vanilla ice cream. Top with the grilled nectarines.
7. Add Toppings: If desired, sprinkle chopped nuts over the sundae for added crunch.
8. Garnish: Finish with a sprig of fresh mint for a pop of color and freshness.
9. Serve Immediately: Enjoy your Grilled Nectarine Sundae while the nectarines are still warm!

These steps will guide you through the easy process of creating this delightful dessert that’s sure to impress.