This is the easiest no bake key lime pie out there. It is creamy, citrusy, cold and oh so delicious. You can serve it chilled or even frozen for a perfect summer dessert.
In a large mixing bowl, stir together the key lime juice and sweetened condensed milk. It will be loose at first but should come back to condensed milk consistency as you stir.
Fold in the whipped topping until it is incorporated.
Spread key lime filling mixture in graham cracker crust.