In a medium saucepan, combine the canned whole berry cranberry sauce, orange zest, orange juice, brown sugar, and ground cinnamon.

Stir the mixture over medium heat until well combined and the sugar has dissolved.

Allow the sauce to simmer for about 10 minutes, stirring occasionally to prevent sticking and to ensure flavors meld together.

Once the sauce has thickened slightly and is fragrant, remove from heat.

Let the sauce cool for a few minutes before serving, or chill in the refrigerator if you prefer it cold.