Soak a toothpick in water. Mix the sugar and cinnamon in a small bowl.
With a melon baller, cut a ball of apple out of the Granny Smith Apple, then skewer with your soaked toothpick.
Roll the ball of apple in the cinnamon-sugar mixture to coat.
With a brulee torch, carefully brulee the apple until the sugar has fully carmelized. Be careful not to set the toothpick (or your fingers!) on fire!
Place the brulee'd apple (still on the toothpick) across the top of your coupe glass and serve.