In a small saucepan over medium heat, add sugar and water and dissolve sugar into the water until no granules remain. Add the vanilla bean paste and chopped mint to the mixture, stir, let sit over heat for 3-4 minutes then remove from heat.
Let cool completely before storing in jars.
At this point, you can either keep the mint leaves in the syrup to give it a stronger mint flavor or strain out the mint leaves before adding to jars. Up to you!