Simmer the apple juice in a sauce pan until the consistency of runny honey, about 30 minutes.
You should have about 1/2 to 2/3 cup reduced juice.
You can let the juice simmer unattended for about 20-25 minutes.
When the mixture begins to thicken, keep an eye on the pot to make sure it doesn't burn (it goes from thickened to burned very quickly).
Let cool slightly, then stir in the coconut oil or butter.
Stir until emulsified.
Add a small pinch of salt. Use immediately, or refrigerate.
The sauce will harden slightly in the fridge, so soften it over a pan of hot water before serving.
I recommend using fresh juice instead of store bought juice, which is pasteurized and may contain sweeteners, preservatives and mold. You can see a video of how to press fresh apple juice HERE. If you don’t have a juicer, Trader Joe’s carries an organic, unfiltered apple juice with no added sugar or sweetener. Apple juice creates the traditional caramel sauce color, but feel free to experiment with other sweet fruit juices. Half apple juice and half pineapple juice tastes delicious, for example. Makes about 1/2 Cup