You can either make your own caramel sauce or use a store-bought one for this hack. If you're going the DIY route, you'll want to concoct a "wet caramel," which basically involves cooking water ...

The natural acidity helps cut through the sweetness, giving the caramel a deeper, more nuanced flavor." Finally, add the butter and cream in order to create that velvety mouthfeel you're going for.