Put the cranberries and ½ cup sweetener in a large skillet. Cook on low, stirring occasionally, for about 1 hour until they have all popped and are starting to dry out. Cook longer if necessary. They should begin to look like craisins.
Once they look like dried cranberries add the rest of the sweetener and taste them. If you would like them sweeter just add more sweetener to taste.
Transfer onto a parchment-lined baking sheet. Let them sit out for a few hours to finish drying. Just stir them occasionally. Store in an airtight container in the fridge.
Nutrition: this yields about 2 cups of loosely packed craisins. Each serving is ¼ cup and has 3 NET carbs.To Store: keep the sugar-free dried cranberries in a sealed container in the fridge. To Freeze: lay the dried cranberries out on a baking sheet and flash freeze. Then place them in a freezer-safe container for up to 6-8 months.