Slow Cooker Dulce De Leche - cooking recipe

Ingredients

1 (14 ounce) can sweetened condensed milk, unopened (not evaporated!)
1 gallon water

Preparation

Wash and remove the labels from your cans of sweetened condensed milk. Make sure the cans are undented and unopened.
Stand your cans up in the slow cooker and pour water in to cover cans fully.
Cook on low for at least 8 hours (I've gone up to 12 hours once when I forgot about the cans, results were still good). You could probably do this on high for 4-5 hours but I haven't tried it.
Allow to cool fully before opening the can. Store in refrigerator.
If you open the can and find that it's not golden enough (highly unlikely), scoop out contents into a saucepan and simmer on low until desired color.