Zest and juice all 3 oranges. You need about ½ cup of fresh orange juice, so zest and juice the additional orange if necessary.
Add 2 Tbsp of maple syrup plus any additional flavors, if desired (remember to pick just one or two!).
Cook on high for 3-4 hours, or on low for 7-8 hours.
The cranberries will be very soft by this point, so you can mash them with the back of a wooden spoon until they reach your desired consistency.
Taste, and add additional sweeter and/or optional flavors as desired. The sauce will thicken slightly as it cools.
Notes
Optional Flavors: a splash of vanilla extract (here’s how to make it at home), pinch(es) of cinnamon OR whole cinnamon sticks, a pinch of ground or freshly grated ginger (as tempting as it may be to pick all of them, it’s really best to pick just one or two)