Combine both ingredients in a small saucepan over medium-low heat. Stir regularly, scraping the bottom of the pan, until hot throughout, for 5-10 minutes. Or heat in the microwave, covered, stirring every minute or so, until hot throughout - about 3-5 minutes total.
Serve straight from the saucepan, super casual. Or transfer to a serving bowl. Or use a mini crockpot to keep it warm. You could also combine the ingredients right in the crockpot and heat until thoroughly melty and hot.
