Been doing this for years! My mother taught it to me! Unopened can of [sweetened] condensed milk [like Eagle Brand - do NOT use "evaporated milk" - you will not get the same result] + 8 hours on low (completely submerged in water) in the crock pot + cool down in the fridge = Caramel! This is the best caramel I've ever had, let alone made! It's so easy! Need to try this!