Unbelievable Caramel Pie in Crock Pot (from Full Bellies Blog)

2 14"cans sweetened condensed milk
9" graham cracker crust
Garnish: whipped topping

1. Pour condensed milk into a slow cooker that has been sprayed with non-stick vegetable spray. Cover and cook on low for 3 1/2 to 4 hours. After 2 1/2 hours, milk will begin to thicken; begin stirring every 15 minutes.
2. When thick and golden (color of peanut butter) , stir again until smooth; pour into pie crust and chill. Garnish with whipped topping. Makes 6-8 servings.

In my opinion: This was great! I have in my notes to add 1.4 oz coarsely chopped Toffee bar. I guess you could add any candy bar.