Put a dish towel on the bottom of your slow cooker, if you don't do this, you will have rust rings on the bottom of your slow cooker. Even if your slow cooker is black. Put sweetened condensed milk can, unopened on dish towel. Fill Slow Cooker with water to cover can(s).You can cook more than one at a time, and actually store any extra you make in the pantry!
Cook on low for 8 hours.
Cool sweetened condesned can, overnight if possible.
Preheat oven to 375 degrees
Make crust- crush graham crackers in a large zip lock bag, add melted butter, cinnamon, salt, and sugar. Press into a 9 inch pie plate.
Bake pie crust for 8 to 12 minutes, until lightly browned
Let crust cool
Whip your whipping cream with sugar, vanilla and salt to stiff peaks. About 3 minutes, don't over whip.
Slice bananas into crust, add entire can of cooked sweetened condensed milk on top of bananas, pipe or spread on whipped cream
Notes
Nutritional values are approximate. Please use your own calculations if you require a special diet. The values below are for 1/6 of the reicpe.