In a small pot, combine condensed milk, 2/3 cup key lime juice, and zest
Stir over low heat and allow to bubble for 1-2 minutes, stirring constantly
Set aside
In a large bowl, crush graham cracker crumbs and stir in melted butter
Using small mason jars, fill bottom with a layer of graham cracker crumbs, followed by a few spoonfuls of Edwards Key Lime Pie (just the filling)
Top with a layer of whipped topping, additional graham cracker crumbs and key lime syrup
Enjoy!