01 -
Rinse and drain cranberries, removing any stems or damaged berries. Zest the orange with a fine grater and juice it until you obtain ½ cup of juice.
02 -
Place cranberries, granulated sugar, brown sugar, orange juice, orange zest, water, vanilla extract, ground cinnamon, and salt into the slow cooker. Stir thoroughly to evenly distribute all components.
03 -
Set slow cooker to LOW and cook uncovered for 4 hours, stirring occasionally to help cranberries break down evenly. Check consistency earlier if preferred looser.
04 -
When cranberries have burst and sauce thickened, taste and adjust sweetness or acidity as desired. Mash some cranberries for a smoother texture or leave whole for chunkiness. Stir in any final flavor adjustments.
05 -
Allow sauce to cool to room temperature; it will thicken further. Serve immediately, refrigerate up to one week in airtight containers, or chill for later use.