In a medium sized saucepan, over medium heat, add fresh cranberries, orange juice, orange zest, diced apple, cinnamon stick, water and sugar.
Bring to a boil, stirring occasionally. Once boiling, reduce heat to a simmer and cook until the sauce has thickened. Should be only about 15 minutes.
Once desired thickness has been reached, remove the pan from heat and take out the cinnamon stick. Then, either serve immediately, or let cool in the fridge and serve later!