This recipe is not a "set and forget" recipe until you know how long it will take in your slow cooker.
You can substitute any flavor chip for your favorites. My personal favorite is a third milk chocolate, a third white chocolate and a third butterscotch.
I used the pre-crushed graham cracker crumbs for convenience. But you can crush your own if you'd like
The recipe is done when the edges begin to golden and the condensed milk is set or no longer liquid. If you slide a spatula along the edge, it should easily pull away from the edge.
You may have melted butter rise to the top while cooking. Don't worry... this is normal. Let your bars cool completely before cutting and the butter will cool back into the bars.
Do NOT cut the bars while hot. Let them cool completely before serving.
As with any of our recipes, calorie counts and nutritional information varies greatly depending on which products you choose to use when cooking this dish.
All slow cookers cook differently, so cooking times are always a basic guideline and should always be tested first in your own slow cooker and time adjusted as needed.