Remove labels from condensed milk, DO NOT OPEN CANS!
Place unopened condensed milk cans inside crock pot. Pour water to fill crock pot and barely cover the cans. Turn on low and cover for 7 hours.
When the 7 hours have finished, turn off the crock pot and remove the cans. Once cans are cool enough to handle, remove tops and pour into pie crust. Smooth out the top of caramel with spoon or spatula. DO NOT ADD COOL WHIP UNTIL COMPLETELY COOL!
Once completely cooled, top with cool whip and garnish with pecans and mini chocolate chips. ENJOY!