Remove labels from cans and place into crockpot.Option 2: Open cans of sweetened condensed milk and pour into three half pint jars, dividing evenly. Put on lids and rings and place in crockpot.
Fill crock pot with water so that it covers about 1/2 inch above the top of the jars.
Turn crock pot onto low and set timer for 8-10 hours, depending on how thick you want it..
After 10 hours and remove jars from crock pot. Allow cans to cool a while before opening.