In a medium saucepan, cook cranberries, sugar, orange juice, and orange zest over medium heat. Add cinnamon stick. One orange squeezed is about ¼ cup of juice.
Bring to a boil, stirring often.
Let cook for 10 - 12 minutes or until cranberries began to burst and soften.
Once the sauce has thickened, remove from heat and carefully remove cinnamon stick.
Transfer sauce to a serving bowl, cover, and chill.
Notes
One orange squeezed gives about 4 Tablespoons of juice. You can substitute ¼ cup of orange juice.If you don't have a cinnamon stick, you can add ⅛ - ¼ teaspoon of ground cinnamon.