In a small to medium size slow cooker, combine all ingredients. Cover and cook on low for four hours or until everything is melted, stirring to combine.
Turn to warm until ready to serve (and even while serving if desired).
Garnish with fresh cilantro if desired and serve with chips or toasted mini taco boat halves.
Video
Notes
If your slow cooker runs hot, you may want to turn it down to warm after two hours.