To a saucepan over medium heat, add the sugar and orange juice. Whisk together and bring up to a simmer. Once simmering, stir in the cranberries and simmer whisking frequently for about 12 minutes, or until the cranberries have burst.
Place sauce into a serving bowl let it sit to thicken up. The longer it sits, the thicker it will become. Enjoy with all of your holiday meals!