Wash and pick over cranberries removing any with blemishes.
In a medium saucepan over medium-high heat bring 1 cup sugar and 1 cup cold water to a boil. Stir until the sugar has completely dissolved, then lower the heat and simmer for 3-5 minutes. Add cranberries, remove from heat.
Let cranberries soak in the syrup for 1 hour or until the syrup has completely cooled. Once cooled, drain.
Transfer cranberries to a cooling rack fitted into a sheet pan to catch drippings. Let dry for 20-30 minutes.
In batches, toss cranberries with the reserved 1 cup sugar. Spread onto a parchment paper lined sheet pan and let dry completely.
Store at room temperature for up to 3 days in an airtight container.
Notes
Citrus Zest: You can add 2-3 tablespoons of orange zest, lemon zest or lime zest to the simple syrup for a burst of citrus. The natural oil in the zest will give a hint of flavor and color to the simple syrup.
Vanilla Bean: You could add a vanilla bean to the simple syrup to give it creamy and sweet floral notes.