Put apple juice, caramel sauce and spices in a medium pan and simmer over medium-low heat for 5 minutes. Let steep for longer if desired.
Make sure to use 100% pure pressed juice or cider (such as Simply Apple). This will produce the best flavor.
If you want to make this in a crock pot, feel free to do so. It will usually take 1-2 hours to warm.
Don't have whole spices? You can use ground cinnamon, cloves, and allspice as well. Start with no more than 1/4 teaspoon of each, and go from there until it's flavored to your liking.
If you want to keep this really simple, you can bypass the caramel completely. In fact, if you want to literally just warm up the juice/cider without any spices, it still tastes fabulous.
Check the comments! Kid version with whipped cream, adult version with a splash of some maple whiskey.