Add all the ingredients to a 1.5 quart slow cooker and stir to combine.
Cover and cook on LOW for 2 1/2 to 3 hours, stirring occasionally, until the dip is melted and isn't super stringy.
Turn the crock pot to WARM or transfer the dip to a serving dish. Serve warm with crostini, crackers, or bread sticks.
As the dip cooks, there's a stringy point it will reach, around the 1 hour to 1 1/2 hour mark. The dip will still be really thick. Keep cooking it!You can also cook this dip on HIGH for 1 hour to 1 1/2 hours, stirring often.