Place all ingredients into your slow cooker and give it a good stir.
Turn your slow cooker to low, and cook for 3-4 hours (depending on your slow cooker). Cranberries will pop and soften. Remove cinnamon sticks.
Sauce will be runny, but will thicken up once it cools.
Notes
*I used the juice of 2 oranges, but you can also use store bought orange juice.**You can use 1/2 cup coconut sugar or 1/2 cup honey for a Paleo version!